diff --git a/.github/actions/pds-companion/Dockerfile b/.github/actions/pds-companion/Dockerfile
index 046dcec9..92dadbc9 100644
--- a/.github/actions/pds-companion/Dockerfile
+++ b/.github/actions/pds-companion/Dockerfile
@@ -3,7 +3,7 @@ FROM jjmerelo/alpine-raku:latest
 USER root
 RUN ["apk", "add", "--no-cache", "bash" \
     # workaround for https://github.com/JJ/alpine-raku/issues/24
-    , "curl"]
+    , "curl", "zef"]
 
 # Install pds-companion & optional dependency
 RUN curl --output pds-companion.zip -L 'https://github.com/moretrim/pds-companion/archive/0.2.0-alpha+20210317.zip' \