diff --git a/.github/workflows/gradle-all.yml b/.github/workflows/gradle-all.yml
index 8826f511a..f2df20620 100644
--- a/.github/workflows/gradle-all.yml
+++ b/.github/workflows/gradle-all.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -42,7 +42,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -69,7 +69,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -96,7 +96,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -123,7 +123,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
diff --git a/.github/workflows/gradle-main.yml b/.github/workflows/gradle-main.yml
index 34d3e65f0..904c45fb7 100644
--- a/.github/workflows/gradle-main.yml
+++ b/.github/workflows/gradle-main.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -42,7 +42,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -69,7 +69,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -96,7 +96,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -123,7 +123,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
diff --git a/.github/workflows/gradle-pr.yml b/.github/workflows/gradle-pr.yml
index fd88ad76f..cecca085f 100644
--- a/.github/workflows/gradle-pr.yml
+++ b/.github/workflows/gradle-pr.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -36,7 +36,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -63,7 +63,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps:
@@ -90,7 +90,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        jdk: [ 1.8, 11, 16 ]
+        jdk: [ 1.8, 11, 17 ]
       fail-fast: false
 
     steps: