diff --git a/CHANGELOG.md b/CHANGELOG.md
index fd4b92a..b2a7c71 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 1.5.1 (2020/05/10)
+
+* Mark `key` input as deprecated
+
 ## 1.5.0 (2020/05/07)
 
 * Use native GitHub Action tools to download assets and use GitHub API
diff --git a/action.yml b/action.yml
index e27e7f7..2abe4df 100644
--- a/action.yml
+++ b/action.yml
@@ -13,7 +13,8 @@ inputs:
   args:
     description: 'Arguments to pass to GoReleaser'
   key:
-    description: 'Private key to import'
+    description: 'Deprecated. Use goreleaser/goreleaser-action@v2 alongside crazy-max/ghaction-import-gpg'
+    deprecationMessage: 'The key input will not be supported. Use goreleaser/goreleaser-action@v2 alongside crazy-max/ghaction-import-gpg'
   workdir:
     description: 'Working directory (below repository root)'
     default: '.'