diff --git a/.github/ci-hpc-config.yml b/.github/ci-hpc-config.yml
index 8a5eb009e..c7a7073ee 100644
--- a/.github/ci-hpc-config.yml
+++ b/.github/ci-hpc-config.yml
@@ -3,7 +3,7 @@ build:
   - ninja
   dependencies:
   - ecmwf/ecbuild@develop
-  - MathisRosenhauer/libaec@master
+  - MathisRosenhauer/libaec@refs/tags/v1.1.3
   - ecmwf/eccodes@develop
   - ecmwf/eckit@develop
   - ecmwf/odc@develop