diff --git a/plugin-development/gradle-plugin-convention/gradle/libs-plugin-convention.versions.toml b/plugin-development/gradle-plugin-convention/gradle/libs-plugin-convention.versions.toml
index 370f01444..98e382d98 100644
--- a/plugin-development/gradle-plugin-convention/gradle/libs-plugin-convention.versions.toml
+++ b/plugin-development/gradle-plugin-convention/gradle/libs-plugin-convention.versions.toml
@@ -1,6 +1,6 @@
 [versions]
 gradle = "8.0"
-kotlin = "1.8.10"
+kotlin = "1.8.20"
 test-jUnit5 = "5.9.2"
 test-mockk = "1.13.4"
 test-jacoco = "0.8.8"
diff --git a/plugin-development/gradle-test-util/gradle/libs-gradle-test-util.versions.toml b/plugin-development/gradle-test-util/gradle/libs-gradle-test-util.versions.toml
index c46bb7deb..e518a2c39 100644
--- a/plugin-development/gradle-test-util/gradle/libs-gradle-test-util.versions.toml
+++ b/plugin-development/gradle-test-util/gradle/libs-gradle-test-util.versions.toml
@@ -1,6 +1,6 @@
 [versions]
 gradle = "8.0"
-kotlin = "1.8.10"
+kotlin = "1.8.20"
 test-jUnit5 = "5.9.2"
 test-mockk = "1.13.4"
 plugin-kotlin-binaryCompatibility = "0.13.0"