diff --git a/Dockerfile.compile b/Dockerfile.compile
index 3160976a1a..8a10f037d5 100644
--- a/Dockerfile.compile
+++ b/Dockerfile.compile
@@ -1,6 +1,6 @@
-FROM alpine:3.18
+FROM alpine:3.20
 RUN apk add --update \
-    openjdk11 \
+    openjdk17 \
     && rm -rf /var/cache/apk
 LABEL maintainer="sig-platform@spinnaker.io"
 ENV GRADLE_USER_HOME /workspace/.gradle
diff --git a/Dockerfile.slim b/Dockerfile.slim
index 60f5e8215e..958b16a460 100644
--- a/Dockerfile.slim
+++ b/Dockerfile.slim
@@ -1,4 +1,4 @@
-FROM alpine:3.18
+FROM alpine:3.20
 LABEL maintainer="sig-platform@spinnaker.io"
 RUN apk --no-cache add --update bash curl openjdk17-jre
 RUN addgroup -S -g 10111 spinnaker