diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6fdfb190d..b8af6a12d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## main / unreleased
 
+* [ENHANCEMENT] Update Docker base image to `alpine:3.19`. #97
+
 ## v0.9.0
 
 * [ENHANCEMENT] Updated dependencies, including: #93
diff --git a/Dockerfile b/Dockerfile
index 9b63c127f..b19bf02fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21-alpine3.18 AS build
+FROM golang:1.21-alpine3.19 AS build
 
 ARG TARGETOS
 ARG TARGETARCH
@@ -10,7 +10,7 @@ COPY . /src/rollout-operator
 WORKDIR /src/rollout-operator
 RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} make ${BUILDTARGET}
 
-FROM alpine:3.18
+FROM alpine:3.19
 RUN apk add --no-cache ca-certificates
 
 COPY --from=build /src/rollout-operator/rollout-operator /bin/rollout-operator
diff --git a/integration/mock-service/Dockerfile b/integration/mock-service/Dockerfile
index 7cb568ce6..422d85d60 100644
--- a/integration/mock-service/Dockerfile
+++ b/integration/mock-service/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.18
+FROM alpine:3.19
 
 COPY       mock-service /bin/mock-service
 ENTRYPOINT [ "/bin/mock-service" ]