diff --git a/.release-notes/alpine318.md b/.release-notes/alpine318.md
new file mode 100644
index 0000000..9e38400
--- /dev/null
+++ b/.release-notes/alpine318.md
@@ -0,0 +1,3 @@
+## Use Alpine 3.18 as our base image
+
+Previously we were using Alpine 3.16. This should have no impact on anyone unless they are using this image as the base image for another.
diff --git a/Dockerfile b/Dockerfile
index d8c870e..ac1ddbf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.18
 
 COPY entrypoint.py /entrypoint.py