diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b30c8ede5..0017a99ee 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,5 +29,5 @@ jobs:
         self_coverage: true
         dependencies: |
           ecmwf/ecbuild
-          libaec
+          MathisRosenhauer/libaec@master
         dependency_branch: develop