diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2032b5a..4576ebb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
 
       - name: Validate Gradle wrapper
diff --git a/build.gradle.kts b/build.gradle.kts
index 86ea326..f781829 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -29,7 +29,7 @@ application {
 
 kotlin {
     jvmToolchain {
-        (this as JavaToolchainSpec).languageVersion.set(JavaLanguageVersion.of(17))
+        (this as JavaToolchainSpec).languageVersion.set(JavaLanguageVersion.of(21))
     }
 }
 
diff --git a/generate-executable.sh b/generate-executable.sh
index df08780..dd6b0d5 100755
--- a/generate-executable.sh
+++ b/generate-executable.sh
@@ -10,7 +10,7 @@ echo "JAR file has been built! ✅"
 echo "Install GraalVM via SDKMAN!:"
 curl --silent "https://get.sdkman.io?rcupdate=false" | bash || echo 'SDKMAN! already installed'
 source "$HOME/.sdkman/bin/sdkman-init.sh"
-GRAALVM_VERSION="22.3.1.r17-grl"
+GRAALVM_VERSION="22-graalce"
 sdkman_auto_answer=true sdk install java $GRAALVM_VERSION > /dev/null || echo "GraalVM $GRAALVM_VERSION already installed."
 sdk use java $GRAALVM_VERSION