diff --git a/CHANGELOG.md b/CHANGELOG.md
index b94310f4..0b5d79aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 - [#1433](https://github.com/oauth2-proxy/oauth2-proxy/pull/1433) Let authentication fail when session validation fails (@stippi2)
 - [#1445](https://github.com/oauth2-proxy/oauth2-proxy/pull/1445) Fix docker container multi arch build issue by passing GOARCH details to make build (@jkandasa)
 - [#1444](https://github.com/oauth2-proxy/oauth2-proxy/pull/1444) Update LinkedIn provider validate URL (@jkandasa)
+- [#1471](https://github.com/oauth2-proxy/oauth2-proxy/pull/1471) Update alpine to 3.15 (@AlexanderBabel)
 
 # V7.2.0
 
diff --git a/Dockerfile b/Dockerfile
index 80aab81c..644231d4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -37,7 +37,7 @@ RUN case ${TARGETPLATFORM} in \
     GOARCH=${GOARCH} VERSION=${VERSION} make build && touch jwt_signing_key.pem
 
 # Copy binary to alpine
-FROM alpine:3.14
+FROM alpine:3.15
 COPY nsswitch.conf /etc/nsswitch.conf
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/oauth2-proxy /bin/oauth2-proxy