diff --git a/.github/actions/create-lint-wf/action.yml b/.github/actions/create-lint-wf/action.yml
index 01b0fda422..2573784799 100644
--- a/.github/actions/create-lint-wf/action.yml
+++ b/.github/actions/create-lint-wf/action.yml
@@ -17,7 +17,7 @@ runs:
 
     - uses: actions/setup-java@v4
       with:
-        java-version: "21"
+        java-version: "17"
         distribution: "temurin"
 
     - name: Install Nextflow
diff --git a/.github/workflows/create-test-lint-wf-template.yml b/.github/workflows/create-test-lint-wf-template.yml
index 78d174434b..f5e40e8377 100644
--- a/.github/workflows/create-test-lint-wf-template.yml
+++ b/.github/workflows/create-test-lint-wf-template.yml
@@ -93,7 +93,7 @@ jobs:
 
       - uses: actions/setup-java@v4
         with:
-          java-version: "21"
+          java-version: "17"
           distribution: "temurin"
 
       - name: Install Nextflow
diff --git a/.github/workflows/create-test-wf.yml b/.github/workflows/create-test-wf.yml
index 55b64f9cfb..b12b503b27 100644
--- a/.github/workflows/create-test-wf.yml
+++ b/.github/workflows/create-test-wf.yml
@@ -61,7 +61,7 @@ jobs:
 
       - uses: actions/setup-java@v4
         with:
-          java-version: "21"
+          java-version: "17"
           distribution: "temurin"
 
       - name: Install Nextflow
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index dcf5f0b0cc..5bb526396d 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -122,7 +122,7 @@ jobs:
 
       - uses: actions/setup-java@v4
         with:
-          java-version: "21"
+          java-version: "17"
           distribution: "temurin"
 
       - name: Install Nextflow
diff --git a/nf_core/pipeline-template/.github/workflows/ci.yml b/nf_core/pipeline-template/.github/workflows/ci.yml
index d022850ec5..3bc9db4d76 100644
--- a/nf_core/pipeline-template/.github/workflows/ci.yml
+++ b/nf_core/pipeline-template/.github/workflows/ci.yml
@@ -49,7 +49,7 @@ jobs:
 
       - uses: actions/setup-java@v4
         with:
-          java-version: "21"
+          java-version: "17"
           distribution: "temurin"
 
       - name: Set up Nextflow
diff --git a/nf_core/pipeline-template/.github/workflows/download_pipeline.yml b/nf_core/pipeline-template/.github/workflows/download_pipeline.yml
index 5d483bd0a4..326ac0936d 100644
--- a/nf_core/pipeline-template/.github/workflows/download_pipeline.yml
+++ b/nf_core/pipeline-template/.github/workflows/download_pipeline.yml
@@ -33,7 +33,7 @@ jobs:
     steps:
       - uses: actions/setup-java@v4
         with:
-          java-version: "21"
+          java-version: "17"
           distribution: "temurin"
 
       - name: Install Nextflow
diff --git a/nf_core/pipeline-template/.github/workflows/linting.yml b/nf_core/pipeline-template/.github/workflows/linting.yml
index a6150781c3..f9ef12335b 100644
--- a/nf_core/pipeline-template/.github/workflows/linting.yml
+++ b/nf_core/pipeline-template/.github/workflows/linting.yml
@@ -35,7 +35,7 @@ jobs:
 
       - uses: actions/setup-java@v4
         with:
-          java-version: "21"
+          java-version: "17"
           distribution: "temurin"
 
       - name: Install Nextflow