diff --git a/app/build.gradle b/app/build.gradle
index 1b99c89a..c18c86ac 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -37,7 +37,7 @@ android {
         compose true
     }
     composeOptions {
-        kotlinCompilerExtensionVersion '1.4.7'
+        kotlinCompilerExtensionVersion '1.5.9'
     }
     packagingOptions {
         resources {
diff --git a/kalendar-endlos/build.gradle b/kalendar-endlos/build.gradle
index 367aa11f..f3bd5b61 100644
--- a/kalendar-endlos/build.gradle
+++ b/kalendar-endlos/build.gradle
@@ -21,7 +21,7 @@ android {
         consumerProguardFiles "consumer-rules.pro"
     }
     composeOptions {
-        kotlinCompilerExtensionVersion '1.4.7'
+        kotlinCompilerExtensionVersion '1.5.9'
     }
     buildTypes {
         release {
diff --git a/kalendar/build.gradle b/kalendar/build.gradle
index 6b9399f5..66a678bd 100644
--- a/kalendar/build.gradle
+++ b/kalendar/build.gradle
@@ -21,7 +21,7 @@ android {
         consumerProguardFiles "consumer-rules.pro"
     }
     composeOptions {
-        kotlinCompilerExtensionVersion '1.4.7'
+        kotlinCompilerExtensionVersion '1.5.9'
     }
     buildTypes {
         release {