diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 4c7c5be..099859f 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -29,7 +29,7 @@ jobs:
 
       - name: Set up perl etc
         run: |
-          brew install perl curl socat jsonlint
+          brew install perl curl socat jsonlint cpanminus
           perl -V
 
       - name: install perl modules