diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 76f6344..099097a 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="2.3.20" />
+    <option name="version" value="2.3.21-RC" />
   </component>
 </project>
diff --git a/build.gradle.kts b/build.gradle.kts
index 2c434f6..a1b3b31 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,5 +8,5 @@ buildscript {
 
 allprojects {
     group = "com.rickclephas.kmp"
-    version = "1.0.3"
+    version = "1.0.3-kotlin-2.3.21-RC"
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index b4def16..1aeae6f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.3.20"
+kotlin = "2.3.21-RC"
 kotlinx-coroutines = "1.10.1"
 android = "8.5.2"
 androidx-lifecycle = "2.8.7"