diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b9115b9..61fc8ae 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,6 +18,7 @@ administration-client-tests:
   stage: test
   script:
     - cd administration_client
+    - ./create_config_files.sh
     - yarn install
     - yarn run test:unit
   tags:
diff --git a/administration_client/create_config_files.sh b/administration_client/create_config_files.sh
new file mode 100755
index 0000000..0cf3927
--- /dev/null
+++ b/administration_client/create_config_files.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+if [ -z "$NPM_CONFIG_REGISTRY" ]
+then
+    echo "No custom registry defined."
+else
+    echo "Creating custom registry configurations."
+    echo "registry \"$NPM_CONFIG_REGISTRY\"" >> .npmrc
+    echo "registry \"$NPM_CONFIG_REGISTRY\"" >> .yarnrc
+fi
\ No newline at end of file