diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fd0b1cf..ce50fbf 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,6 +9,8 @@ static:
     key: npm-$CI_COMMIT_REF_SLUG
     paths:
       - "$CI_PROJECT_DIR/.npm-cache"
+  before_script:
+    - apk add --no-cache bash
   script:
     - npm ci --cache .npm-cache --prefer-offline
     - npm run build
diff --git a/scripts/copy-npm-contrib.sh b/scripts/copy-npm-contrib.sh
index def018d..630d5bc 100755
--- a/scripts/copy-npm-contrib.sh
+++ b/scripts/copy-npm-contrib.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/usr/bin/env bash
 
 set -e