diff --git a/build/protoc/Dockerfile b/build/protoc/Dockerfile
index 7010823..66a3575 100644
--- a/build/protoc/Dockerfile
+++ b/build/protoc/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.15.3 as curl
+FROM alpine:3.18.3 as curl
 RUN apk add --no-cache curl unzip
 RUN adduser --disabled-password --gecos '' curl
 USER curl