diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04ccaca8..5dc9a65a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## Unreleased
 
+Changes:
+* Dependency updates:
+  * Docker image `alpine` 3.20.3 => 3.21.0
+
 ## 1.6.0 (December 5, 2024)
 
 Changes:
diff --git a/Dockerfile b/Dockerfile
index 1045ddad..6e1e99bd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,7 +12,7 @@
 # `default` is the production docker image which cannot be built locally.
 # For local dev and testing purposes, please build and use the `dev` docker image.
 
-FROM docker.mirror.hashicorp.services/alpine:3.20.3 AS dev
+FROM docker.mirror.hashicorp.services/alpine:3.21.0 AS dev
 
 RUN addgroup vault && \
     adduser -S -G vault vault
@@ -24,7 +24,7 @@ USER vault
 ENTRYPOINT ["/vault-k8s"]
 
 # This target creates a production release image for the project.
-FROM docker.mirror.hashicorp.services/alpine:3.20.3 AS default
+FROM docker.mirror.hashicorp.services/alpine:3.21.0 AS default
 
 # PRODUCT_VERSION is the tag built, e.g. v0.1.0
 # PRODUCT_REVISION is the git hash built