diff --git a/lib/config/definitions.js b/lib/config/definitions.js
index 42cab593e3120bd5203c8414ccc547e8238c8063..c1195e097ec7e14b003e72e96b2c851fe63db7e9 100644
--- a/lib/config/definitions.js
+++ b/lib/config/definitions.js
@@ -797,6 +797,7 @@ const options = [
       recreateClosed: true,
       rebaseStalePrs: true,
       groupName: 'Pin Dependencies',
+      groupSlug: 'pin-dependencies',
       commitMessageAction: 'Pin',
       group: {
         commitMessageTopic: 'dependencies',
diff --git a/renovate-schema.json b/renovate-schema.json
index 6184d679e17c6185300a967784c93443765bd58d..dbbc37a7ffd617f35a96bb34c2910c0e02e238ea 100644
--- a/renovate-schema.json
+++ b/renovate-schema.json
@@ -511,6 +511,7 @@
         "recreateClosed": true,
         "rebaseStalePrs": true,
         "groupName": "Pin Dependencies",
+        "groupSlug": "pin-dependencies",
         "commitMessageAction": "Pin",
         "group": {
           "commitMessageTopic": "dependencies",