diff --git a/Dockerfile b/Dockerfile
index 05f55b1..c249557 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -47,7 +47,7 @@ RUN go install github.com/yaegashi/muslstack@latest && \
 
 # ---
 
-FROM alpine:3.18
+FROM alpine:3
 
 # renew global args from above & pin any dependency versions
 ARG HUGO_VERSION