diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e4bf4c3..8d54fa6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
-        java-version: [ 11, 17, 24, 25 ]
+        java-version: [ 17, 24, 25 ]
       fail-fast: false
     steps:
       - name: Checkout
diff --git a/base/build.gradle.kts b/base/build.gradle.kts
index 6afa7fa..f83c4a6 100644
--- a/base/build.gradle.kts
+++ b/base/build.gradle.kts
@@ -1,4 +1,4 @@
-import org.gradle.api.JavaVersion.VERSION_1_8
+import org.gradle.api.JavaVersion.VERSION_17
 import org.jetbrains.kotlin.config.KotlinCompilerVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
@@ -23,8 +23,8 @@ dependencies {
 }
 
 java {
-	sourceCompatibility = VERSION_1_8
-	targetCompatibility = VERSION_1_8
+	sourceCompatibility = VERSION_17
+	targetCompatibility = VERSION_17
 }
 
 kotlin {
@@ -33,7 +33,7 @@ kotlin {
 
 tasks.withType<KotlinCompile> {
 	kotlinOptions {
-		jvmTarget = "1.8"
+		jvmTarget = "17"
 		freeCompilerArgs += "-Xopt-in=kotlin.io.path.ExperimentalPathApi"
 	}
 }
diff --git a/kotest/build.gradle.kts b/kotest/build.gradle.kts
index ed62857..7510634 100644
--- a/kotest/build.gradle.kts
+++ b/kotest/build.gradle.kts
@@ -1,4 +1,4 @@
-import org.gradle.api.JavaVersion.VERSION_1_8
+import org.gradle.api.JavaVersion.VERSION_17
 import org.jetbrains.dokka.gradle.DokkaTask
 import org.jetbrains.kotlin.config.KotlinCompilerVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
@@ -27,8 +27,8 @@ dependencies {
 }
 
 java {
-	sourceCompatibility = VERSION_1_8
-	targetCompatibility = VERSION_1_8
+	sourceCompatibility = VERSION_17
+	targetCompatibility = VERSION_17
 }
 
 kotlin {
@@ -37,7 +37,7 @@ kotlin {
 
 tasks.withType<KotlinCompile> {
 	kotlinOptions {
-		jvmTarget = "1.8"
+		jvmTarget = "17"
 	}
 }
 
diff --git a/spek/build.gradle.kts b/spek/build.gradle.kts
index 9ea2e5b..eec5b52 100644
--- a/spek/build.gradle.kts
+++ b/spek/build.gradle.kts
@@ -1,4 +1,4 @@
-import org.gradle.api.JavaVersion.VERSION_1_8
+import org.gradle.api.JavaVersion.VERSION_17
 import org.jetbrains.dokka.gradle.DokkaTask
 import org.jetbrains.kotlin.config.KotlinCompilerVersion
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
@@ -29,8 +29,8 @@ dependencies {
 }
 
 java {
-	sourceCompatibility = VERSION_1_8
-	targetCompatibility = VERSION_1_8
+	sourceCompatibility = VERSION_17
+	targetCompatibility = VERSION_17
 }
 
 kotlin {
@@ -39,7 +39,7 @@ kotlin {
 
 tasks.withType<KotlinCompile> {
 	kotlinOptions {
-		jvmTarget = "1.8"
+		jvmTarget = "17"
 	}
 }