diff --git a/uhabits-server/gradle.properties b/uhabits-server/gradle.properties
index f7235a299..b7300cbf9 100644
--- a/uhabits-server/gradle.properties
+++ b/uhabits-server/gradle.properties
@@ -19,5 +19,5 @@
 
 ktor_version=1.4.1
 kotlin.code.style=official
-kotlin_version=1.4.10
+kotlin_version=1.4.21
 logback_version=1.2.1