diff --git a/.drone.star b/.drone.star
index 7e2e7ed..5c9c9af 100644
--- a/.drone.star
+++ b/.drone.star
@@ -2,8 +2,8 @@ repo = "spritsail/alpine"
 archs = ["amd64", "arm64"]
 branches = ["master"]
 versions = {
-  "3.19": [],
-  "3.20": ["latest"],
+  "3.20": [],
+  "3.21": ["latest"],
   "edge": [],
 }
 
diff --git a/Dockerfile b/Dockerfile
index 3d51435..e4b0ed4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG ALPINE_TAG=3.19
+ARG ALPINE_TAG=3.21
 
 FROM alpine:$ALPINE_TAG