diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/server/AbstractSyncServer.kt b/uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/AbstractSyncServer.kt
similarity index 90%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/server/AbstractSyncServer.kt
rename to uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/AbstractSyncServer.kt
index f3afe7bf0..713c81a5e 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/server/AbstractSyncServer.kt
+++ b/uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/AbstractSyncServer.kt
@@ -17,12 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.server
-
-import org.isoron.uhabits.sync.EditConflictException
-import org.isoron.uhabits.sync.KeyNotFoundException
-import org.isoron.uhabits.sync.ServiceUnavailable
-import org.isoron.uhabits.sync.SyncData
+package org.isoron.uhabits.core.sync
 
 interface AbstractSyncServer {
     /**
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/SyncData.kt b/uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/SyncData.kt
similarity index 77%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/SyncData.kt
rename to uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/SyncData.kt
index 65fcd1ae9..3910ce775 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/SyncData.kt
+++ b/uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/SyncData.kt
@@ -17,9 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync
-
-import com.fasterxml.jackson.databind.ObjectMapper
+package org.isoron.uhabits.core.sync
 
 data class SyncData(
     val version: Long,
@@ -29,7 +27,3 @@ data class SyncData(
 data class RegisterReponse(val key: String)
 
 data class GetDataVersionResponse(val version: Long)
-
-val defaultMapper = ObjectMapper()
-fun SyncData.toJson(): String = defaultMapper.writeValueAsString(this)
-fun GetDataVersionResponse.toJson(): String = defaultMapper.writeValueAsString(this)
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/SyncException.kt b/uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/SyncException.kt
similarity index 96%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/SyncException.kt
rename to uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/SyncException.kt
index 7a8d615f3..407880566 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/SyncException.kt
+++ b/uhabits-core/src/commonMain/kotlin/org/isoron/uhabits/core/sync/SyncException.kt
@@ -17,7 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync
+package org.isoron.uhabits.core.sync
 
 open class SyncException : RuntimeException()
 
diff --git a/uhabits-server/build.gradle.kts b/uhabits-server/build.gradle.kts
index bfe94836a..dc56f8b46 100644
--- a/uhabits-server/build.gradle.kts
+++ b/uhabits-server/build.gradle.kts
@@ -36,6 +36,7 @@ dependencies {
     val ktorVersion = "1.6.6"
     val kotlinVersion = "1.6.0"
     val logbackVersion = "1.2.7"
+    implementation(project(":uhabits-core"))
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlinVersion")
     implementation("io.ktor:ktor-server-netty:$ktorVersion")
     implementation("ch.qos.logback:logback-classic:$logbackVersion")
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/MetricsModule.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/MetricsModule.kt
similarity index 97%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/MetricsModule.kt
rename to uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/MetricsModule.kt
index 379f96ad8..a05403348 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/MetricsModule.kt
+++ b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/MetricsModule.kt
@@ -17,7 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.app
+package org.isoron.uhabits.server.app
 
 import io.ktor.application.call
 import io.ktor.http.HttpStatusCode
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/RegistrationModule.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/RegistrationModule.kt
similarity index 89%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/RegistrationModule.kt
rename to uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/RegistrationModule.kt
index 2f9d3ef54..ae7b196f9 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/RegistrationModule.kt
+++ b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/RegistrationModule.kt
@@ -17,15 +17,15 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.app
+package org.isoron.uhabits.server.app
 
 import io.ktor.application.call
 import io.ktor.http.HttpStatusCode
 import io.ktor.response.respond
 import io.ktor.routing.Routing
 import io.ktor.routing.post
-import org.isoron.uhabits.sync.RegisterReponse
-import org.isoron.uhabits.sync.ServiceUnavailable
+import org.isoron.uhabits.core.sync.RegisterReponse
+import org.isoron.uhabits.core.sync.ServiceUnavailable
 
 fun Routing.registration(app: SyncApplication) {
     post("/register") {
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/StorageModule.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/StorageModule.kt
similarity index 89%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/StorageModule.kt
rename to uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/StorageModule.kt
index aa2689513..cd337f15d 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/StorageModule.kt
+++ b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/StorageModule.kt
@@ -17,7 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.app
+package org.isoron.uhabits.server.app
 
 import io.ktor.application.call
 import io.ktor.http.HttpStatusCode
@@ -27,10 +27,10 @@ import io.ktor.routing.Routing
 import io.ktor.routing.get
 import io.ktor.routing.put
 import io.ktor.routing.route
-import org.isoron.uhabits.sync.EditConflictException
-import org.isoron.uhabits.sync.GetDataVersionResponse
-import org.isoron.uhabits.sync.KeyNotFoundException
-import org.isoron.uhabits.sync.SyncData
+import org.isoron.uhabits.core.sync.EditConflictException
+import org.isoron.uhabits.core.sync.GetDataVersionResponse
+import org.isoron.uhabits.core.sync.KeyNotFoundException
+import org.isoron.uhabits.core.sync.SyncData
 
 fun Routing.storage(app: SyncApplication) {
     route("/db/{key}") {
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/SyncApplication.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/SyncApplication.kt
similarity index 86%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/SyncApplication.kt
rename to uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/SyncApplication.kt
index 2e49f15e5..dd7cf1856 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/app/SyncApplication.kt
+++ b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/app/SyncApplication.kt
@@ -17,7 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.app
+package org.isoron.uhabits.server.app
 
 import io.ktor.application.Application
 import io.ktor.application.install
@@ -26,9 +26,9 @@ import io.ktor.features.ContentNegotiation
 import io.ktor.features.DefaultHeaders
 import io.ktor.jackson.jackson
 import io.ktor.routing.routing
-import org.isoron.uhabits.sync.repository.FileRepository
-import org.isoron.uhabits.sync.server.AbstractSyncServer
-import org.isoron.uhabits.sync.server.RepositorySyncServer
+import org.isoron.uhabits.server.sync.Repository
+import org.isoron.uhabits.core.sync.AbstractSyncServer
+import org.isoron.uhabits.server.sync.RepositorySyncServer
 import java.nio.file.Path
 import java.nio.file.Paths
 
@@ -38,7 +38,7 @@ val REPOSITORY_PATH: Path = Paths.get(System.getenv("LOOP_REPO_PATH")!!)
 
 class SyncApplication(
     val server: AbstractSyncServer = RepositorySyncServer(
-        FileRepository(REPOSITORY_PATH),
+        Repository(REPOSITORY_PATH),
     ),
 ) {
     fun Application.main() {
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/repository/FileRepository.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/Repository.kt
similarity index 86%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/repository/FileRepository.kt
rename to uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/Repository.kt
index 72ec57c5b..dd5aac506 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/repository/FileRepository.kt
+++ b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/Repository.kt
@@ -17,18 +17,17 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.repository
+package org.isoron.uhabits.server.sync
 
-import org.isoron.uhabits.sync.KeyNotFoundException
-import org.isoron.uhabits.sync.SyncData
+import org.isoron.uhabits.core.sync.KeyNotFoundException
+import org.isoron.uhabits.core.sync.SyncData
 import java.io.PrintWriter
 import java.nio.file.Path
 
-class FileRepository(
+class Repository(
     private val basepath: Path,
-) : Repository {
-
-    override suspend fun put(key: String, data: SyncData) {
+) {
+    fun put(key: String, data: SyncData) {
         // Create directory
         val dataPath = key.toDataPath()
         val dataDir = dataPath.toFile()
@@ -51,7 +50,7 @@ class FileRepository(
         }
     }
 
-    override suspend fun get(key: String): SyncData {
+    fun get(key: String): SyncData {
         val dataPath = key.toDataPath()
         val contentFile = dataPath.resolve("content").toFile()
         val versionFile = dataPath.resolve("version").toFile()
@@ -62,7 +61,7 @@ class FileRepository(
         return SyncData(version, contentFile.readText())
     }
 
-    override suspend fun contains(key: String): Boolean {
+    fun contains(key: String): Boolean {
         val dataPath = key.toDataPath()
         val versionFile = dataPath.resolve("version").toFile()
         return versionFile.exists()
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/server/RepositorySyncServer.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/RepositorySyncServer.kt
similarity index 78%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/server/RepositorySyncServer.kt
rename to uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/RepositorySyncServer.kt
index 30f9abbe2..2372725c8 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/server/RepositorySyncServer.kt
+++ b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/RepositorySyncServer.kt
@@ -17,14 +17,15 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.server
+package org.isoron.uhabits.server.sync
 
 import io.prometheus.client.Counter
-import org.isoron.uhabits.sync.EditConflictException
-import org.isoron.uhabits.sync.KeyNotFoundException
-import org.isoron.uhabits.sync.SyncData
-import org.isoron.uhabits.sync.repository.Repository
-import org.isoron.uhabits.sync.utils.randomString
+import org.isoron.uhabits.core.sync.AbstractSyncServer
+import org.isoron.uhabits.core.sync.EditConflictException
+import org.isoron.uhabits.core.sync.KeyNotFoundException
+import org.isoron.uhabits.core.sync.SyncData
+import java.util.Random
+import kotlin.streams.asSequence
 
 /**
  * An AbstractSyncServer that stores all data in a [Repository].
@@ -74,11 +75,19 @@ class RepositorySyncServer(
         return repo.get(key).version
     }
 
-    private suspend fun generateKey(): String {
+    private fun generateKey(): String {
         while (true) {
             val key = randomString(64)
             if (!repo.contains(key))
                 return key
         }
     }
+
+    private fun randomString(length: Long): String {
+        val chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+        return Random().ints(length, 0, chars.length)
+            .asSequence()
+            .map(chars::get)
+            .joinToString("")
+    }
 }
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/utils/String.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/SyncDataExt.kt
similarity index 67%
rename from uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/utils/String.kt
rename to uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/SyncDataExt.kt
index 6427b326b..f389e6bfe 100644
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/utils/String.kt
+++ b/uhabits-server/src/main/kotlin/org/isoron/uhabits/server/sync/SyncDataExt.kt
@@ -17,15 +17,12 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.utils
+package org.isoron.uhabits.server.sync
 
-import java.util.Random
-import kotlin.streams.asSequence
+import com.fasterxml.jackson.databind.ObjectMapper
+import org.isoron.uhabits.core.sync.GetDataVersionResponse
+import org.isoron.uhabits.core.sync.SyncData
 
-fun randomString(length: Long): String {
-    val chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
-    return Random().ints(length, 0, chars.length)
-        .asSequence()
-        .map(chars::get)
-        .joinToString("")
-}
+val defaultMapper = ObjectMapper()
+fun SyncData.toJson(): String = defaultMapper.writeValueAsString(this)
+fun GetDataVersionResponse.toJson(): String = defaultMapper.writeValueAsString(this)
diff --git a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/repository/Repository.kt b/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/repository/Repository.kt
deleted file mode 100644
index 1e9817ad3..000000000
--- a/uhabits-server/src/main/kotlin/org/isoron/uhabits/sync/repository/Repository.kt
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (C) 2016-2021 Álinson Santos Xavier <git@axavier.org>
- *
- * This file is part of Loop Habit Tracker.
- *
- * Loop Habit Tracker is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * Loop Habit Tracker is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package org.isoron.uhabits.sync.repository
-
-import org.isoron.uhabits.sync.KeyNotFoundException
-import org.isoron.uhabits.sync.SyncData
-
-/**
- * A class that knows how to store and retrieve a large number of [SyncData] items.
- */
-interface Repository {
-    /**
-     * Stores a data item, under the provided key. The item can be later retrieved with [get].
-     * Replaces existing items silently.
-     */
-    suspend fun put(key: String, data: SyncData)
-
-    /**
-     * Retrieves a data item that was previously stored using [put].
-     * @throws KeyNotFoundException If no such key exists.
-     */
-    suspend fun get(key: String): SyncData
-
-    /**
-     * Returns true if the repository contains a given key.
-     */
-    suspend fun contains(key: String): Boolean
-}
diff --git a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/BaseApplicationTest.kt b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/BaseApplicationTest.kt
similarity index 92%
rename from uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/BaseApplicationTest.kt
rename to uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/BaseApplicationTest.kt
index 07111720d..1ac6dfd78 100644
--- a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/BaseApplicationTest.kt
+++ b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/BaseApplicationTest.kt
@@ -17,11 +17,11 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.app
+package org.isoron.uhabits.server.app
 
 import com.nhaarman.mockitokotlin2.mock
 import io.ktor.application.Application
-import org.isoron.uhabits.sync.server.AbstractSyncServer
+import org.isoron.uhabits.core.sync.AbstractSyncServer
 
 open class BaseApplicationTest {
 
diff --git a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/RegistrationModuleTest.kt b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/RegistrationModuleTest.kt
similarity index 95%
rename from uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/RegistrationModuleTest.kt
rename to uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/RegistrationModuleTest.kt
index 8fa80883a..4f2ab516f 100644
--- a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/RegistrationModuleTest.kt
+++ b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/RegistrationModuleTest.kt
@@ -17,7 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.app
+package org.isoron.uhabits.server.app
 
 import com.nhaarman.mockitokotlin2.whenever
 import io.ktor.http.HttpMethod
@@ -25,7 +25,7 @@ import io.ktor.http.HttpStatusCode
 import io.ktor.server.testing.handleRequest
 import io.ktor.server.testing.withTestApplication
 import kotlinx.coroutines.runBlocking
-import org.isoron.uhabits.sync.ServiceUnavailable
+import org.isoron.uhabits.core.sync.ServiceUnavailable
 import org.junit.Test
 import kotlin.test.assertEquals
 
diff --git a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/StorageModuleTest.kt b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/StorageModuleTest.kt
similarity index 93%
rename from uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/StorageModuleTest.kt
rename to uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/StorageModuleTest.kt
index 5d6d69321..71576fb86 100644
--- a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/app/StorageModuleTest.kt
+++ b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/app/StorageModuleTest.kt
@@ -17,7 +17,7 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.app
+package org.isoron.uhabits.server.app
 
 import com.nhaarman.mockitokotlin2.verify
 import com.nhaarman.mockitokotlin2.whenever
@@ -31,11 +31,11 @@ import io.ktor.server.testing.handleRequest
 import io.ktor.server.testing.setBody
 import io.ktor.server.testing.withTestApplication
 import kotlinx.coroutines.runBlocking
-import org.isoron.uhabits.sync.EditConflictException
-import org.isoron.uhabits.sync.GetDataVersionResponse
-import org.isoron.uhabits.sync.KeyNotFoundException
-import org.isoron.uhabits.sync.SyncData
-import org.isoron.uhabits.sync.toJson
+import org.isoron.uhabits.core.sync.EditConflictException
+import org.isoron.uhabits.core.sync.GetDataVersionResponse
+import org.isoron.uhabits.core.sync.KeyNotFoundException
+import org.isoron.uhabits.core.sync.SyncData
+import org.isoron.uhabits.server.sync.toJson
 import org.junit.Test
 import kotlin.test.assertEquals
 
diff --git a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/server/RepositorySyncServerTest.kt b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/sync/RepositorySyncServerTest.kt
similarity index 85%
rename from uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/server/RepositorySyncServerTest.kt
rename to uhabits-server/src/test/kotlin/org/isoron/uhabits/server/sync/RepositorySyncServerTest.kt
index cbe71e027..a6854d677 100644
--- a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/server/RepositorySyncServerTest.kt
+++ b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/sync/RepositorySyncServerTest.kt
@@ -17,13 +17,12 @@
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package org.isoron.uhabits.sync.server
+package org.isoron.uhabits.server.sync
 
 import kotlinx.coroutines.runBlocking
-import org.isoron.uhabits.sync.EditConflictException
-import org.isoron.uhabits.sync.KeyNotFoundException
-import org.isoron.uhabits.sync.SyncData
-import org.isoron.uhabits.sync.repository.FileRepository
+import org.isoron.uhabits.core.sync.EditConflictException
+import org.isoron.uhabits.core.sync.KeyNotFoundException
+import org.isoron.uhabits.core.sync.SyncData
 import org.junit.Test
 import java.nio.file.Files
 import kotlin.test.assertEquals
@@ -32,7 +31,7 @@ import kotlin.test.assertFailsWith
 class RepositorySyncServerTest {
 
     private val tempdir = Files.createTempDirectory("db")
-    private val server = RepositorySyncServer(FileRepository(tempdir))
+    private val server = RepositorySyncServer(Repository(tempdir))
     private val key = runBlocking { server.register() }
 
     @Test
diff --git a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/repository/FileRepositoryTest.kt b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/sync/RepositoryTest.kt
similarity index 92%
rename from uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/repository/FileRepositoryTest.kt
rename to uhabits-server/src/test/kotlin/org/isoron/uhabits/server/sync/RepositoryTest.kt
index 589d56b2a..f29ad0605 100644
--- a/uhabits-server/src/test/kotlin/org/isoron/uhabits/sync/repository/FileRepositoryTest.kt
+++ b/uhabits-server/src/test/kotlin/org/isoron/uhabits/server/sync/RepositoryTest.kt
@@ -19,23 +19,23 @@
 
 @file:Suppress("BlockingMethodInNonBlockingContext")
 
-package org.isoron.uhabits.sync.repository
+package org.isoron.uhabits.server.sync
 
 import kotlinx.coroutines.runBlocking
 import org.hamcrest.CoreMatchers.equalTo
-import org.isoron.uhabits.sync.SyncData
+import org.isoron.uhabits.core.sync.SyncData
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertThat
 import org.junit.Assert.assertTrue
 import org.junit.Test
 import java.nio.file.Files
 
-class FileRepositoryTest {
+class RepositoryTest {
 
     @Test
     fun testUsage() = runBlocking {
         val tempdir = Files.createTempDirectory("db")!!
-        val repo = FileRepository(tempdir)
+        val repo = Repository(tempdir)
 
         val original = SyncData(10, "Hello world")
         repo.put("abcdefg", original)