diff --git a/.github/workflows/master.yml b/.github/workflows/master.yml
index ad3f9f2..ad30fb2 100644
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@@ -15,13 +15,13 @@ jobs:
       MAVEN_CENTRAL_PGP_KEY: ${{ secrets.MAVEN_CENTRAL_PGP_KEY }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: gradle/actions/wrapper-validation@v4
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: '11'
-          distribution: 'temurin'
+          java-version: '21'
+          distribution: 'corretto'
           check-latest: true
       # Configure Gradle for optimal use in GiHub Actions, including caching of downloaded dependencies.
       # See: https://github.com/gradle/actions/blob/main/setup-gradle/README.md
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 573e169..4900736 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -13,13 +13,13 @@ jobs:
   buildAndTest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: gradle/actions/wrapper-validation@v4
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: '11'
-          distribution: 'temurin'
+          java-version: '21'
+          distribution: 'corretto'
           check-latest: true
       # Configure Gradle for optimal use in GiHub Actions, including caching of downloaded dependencies.
       # See: https://github.com/gradle/actions/blob/main/setup-gradle/README.md
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 64ef19c..de556bb 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -19,13 +19,13 @@ jobs:
       RELEASE_VERSION: ${{ github.event.inputs.version }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: gradle/actions/wrapper-validation@v4
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: '11'
-          distribution: 'temurin'
+          java-version: '21'
+          distribution: 'corretto'
           check-latest: true
       # Configure Gradle for optimal use in GiHub Actions, including caching of downloaded dependencies.
       # See: https://github.com/gradle/actions/blob/main/setup-gradle/README.md
diff --git a/build.gradle b/build.gradle
index 41cc28c..e542776 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ plugins {
     id "net.ltgt.errorprone" version '4.3.0'
 
     // Kotlin just for tests - not production code
-    id 'org.jetbrains.kotlin.jvm' version '2.2.0'
+    id 'org.jetbrains.kotlin.jvm' version '2.2.10'
 }
 
 java {
@@ -96,8 +96,8 @@ dependencies {
     jmh 'org.openjdk.jmh:jmh-core:1.37'
     jmh 'org.openjdk.jmh:jmh-generator-annprocess:1.37'
 
-    errorprone 'com.uber.nullaway:nullaway:0.12.7'
-    errorprone 'com.google.errorprone:error_prone_core:2.40.0'
+    errorprone 'com.uber.nullaway:nullaway:0.12.8'
+    errorprone 'com.google.errorprone:error_prone_core:2.41.0'
 
     // just tests
     testCompileOnly 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
diff --git a/settings.gradle b/settings.gradle
index 0f127bf..d1e33ac 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -1,6 +1,6 @@
 plugins {
     id 'com.gradle.develocity' version '4.1'
-    id 'org.gradle.toolchains.foojay-resolver-convention' version '0.9.0'
+    id 'org.gradle.toolchains.foojay-resolver-convention' version '1.0.0'
 }
 
 develocity {