diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86a879a23e..08786347fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,6 +26,7 @@
 - Update python:3.11-slim Docker digest to 2a746e2 ([#2743](https://github.com/nf-core/tools/pull/2743))
 - Update actions/setup-python action to v5 ([#2739](https://github.com/nf-core/tools/pull/2739))
 - Update gitpod/workspace-base Docker digest to 45e7617 ([#2747](https://github.com/nf-core/tools/pull/2747))
+- chore(deps): pin jlumbroso/free-disk-space action to 54081f1 ([#2756](https://github.com/nf-core/tools/pull/2756))
 
 ## [v2.12.1 - Aluminium Wolf - Patch](https://github.com/nf-core/tools/releases/tag/2.12.1) - [2024-02-01]
 
diff --git a/nf_core/pipeline-template/.github/workflows/ci.yml b/nf_core/pipeline-template/.github/workflows/ci.yml
index 0575946844..631862d9ec 100644
--- a/nf_core/pipeline-template/.github/workflows/ci.yml
+++ b/nf_core/pipeline-template/.github/workflows/ci.yml
@@ -36,7 +36,7 @@ jobs:
           version: "{% raw %}${{ matrix.NXF_VER }}{% endraw %}"
 
       - name: Disk space cleanup
-        uses: jlumbroso/free-disk-space@v1.3.1
+        uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be # v1.3.1
 
       - name: Run pipeline with test data
         # TODO nf-core: You can customise CI pipeline run tests as required