diff --git a/.github/workflows/continuous-integration-workflow.yml b/.github/workflows/continuous-integration-workflow.yml
index 7f3b1d67..68c64eef 100644
--- a/.github/workflows/continuous-integration-workflow.yml
+++ b/.github/workflows/continuous-integration-workflow.yml
@@ -22,7 +22,7 @@ jobs:
     if: github.repository == 'spring-projects/spring-session'
     strategy:
       matrix:
-        jdk: [8, 11]
+        jdk: [17]
       fail-fast: false
     steps:
       - uses: actions/checkout@v2
@@ -55,7 +55,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v1
         with:
-          java-version: '8'
+          java-version: '17'
       - name: Setup gradle user name
         run: |
           mkdir -p ~/.gradle
@@ -83,7 +83,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v1
         with:
-          java-version: '8'
+          java-version: '17'
       - name: Setup gradle user name
         run: |
           mkdir -p ~/.gradle
diff --git a/.github/workflows/pr-build-workflow.yml b/.github/workflows/pr-build-workflow.yml
index 4bf8d1b8..b21d28cc 100644
--- a/.github/workflows/pr-build-workflow.yml
+++ b/.github/workflows/pr-build-workflow.yml
@@ -9,7 +9,7 @@ jobs:
     if: github.repository == 'spring-projects/spring-session'
     strategy:
       matrix:
-        jdk: [8, 11]
+        jdk: [17]
       fail-fast: false
     steps:
       - uses: actions/checkout@v2
diff --git a/build.gradle b/build.gradle
index e415ab1a..c986cd3f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,7 +35,7 @@ subprojects {
 	apply plugin: 'io.spring.javaformat'
 
 	plugins.withType(JavaPlugin) {
-		sourceCompatibility = JavaVersion.VERSION_1_8
+		sourceCompatibility = JavaVersion.VERSION_17
 	}
 
 	tasks.withType(Test) {
diff --git a/buildSrc/build.gradle b/buildSrc/build.gradle
index b4ac6088..6e47cd30 100644
--- a/buildSrc/build.gradle
+++ b/buildSrc/build.gradle
@@ -4,7 +4,7 @@ plugins {
     id "groovy"
 }
 
-sourceCompatibility = 1.8
+sourceCompatibility = JavaVersion.VERSION_17
 
 repositories {
     jcenter()
diff --git a/buildSrc/src/main/groovy/io/spring/gradle/convention/JacocoPlugin.groovy b/buildSrc/src/main/groovy/io/spring/gradle/convention/JacocoPlugin.groovy
index 900cf9f1..8f558eab 100644
--- a/buildSrc/src/main/groovy/io/spring/gradle/convention/JacocoPlugin.groovy
+++ b/buildSrc/src/main/groovy/io/spring/gradle/convention/JacocoPlugin.groovy
@@ -34,7 +34,7 @@ class JacocoPlugin implements Plugin<Project> {
 			project.tasks.check.dependsOn project.tasks.jacocoTestReport
 
 			project.jacoco {
-				toolVersion = '0.8.2'
+				toolVersion = '0.8.7'
 			}
 		}
 	}
diff --git a/buildSrc/src/test/java/io/spring/gradle/convention/JavadocApiPluginITest.java b/buildSrc/src/test/java/io/spring/gradle/convention/JavadocApiPluginITest.java
index 681d5c49..ae43f387 100644
--- a/buildSrc/src/test/java/io/spring/gradle/convention/JavadocApiPluginITest.java
+++ b/buildSrc/src/test/java/io/spring/gradle/convention/JavadocApiPluginITest.java
@@ -28,7 +28,7 @@ public class JavadocApiPluginITest {
 				.build();
 		assertThat(result.task(":api").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
         File allClasses = new File(testKit.getRootDir(), "build/api/allclasses-noframe.html");
-		File index = new File(testKit.getRootDir(), "build/api/allclasses.html");
+		File index = new File(testKit.getRootDir(), "build/api/allclasses-index.html");
 		File listing = allClasses.exists() ? allClasses : index;
 		String listingText = FileUtils.readFileToString(listing);
 		assertThat(listingText).contains("sample/Api.html");