diff --git a/Dockerfile b/Dockerfile
index 80a37475..54a290a9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@
 # =============================================================================
 # Build stage
 # =============================================================================
-FROM alpine:3.23@sha256:5b10f432ef3da1b8d4c7eb6c487f2f5a8f096bc91145e68878dd4a5019afde11 AS builder
+FROM alpine:3.23@sha256:fd791d74b68913cbb027c6546007b3f0d3bc45125f797758156952bc2d6daf40 AS builder
 
 # Install build dependencies from build.zig:
 # - zlib-dev/zlib-static: linkSystemLibrary("z")
diff --git a/lambda/Dockerfile b/lambda/Dockerfile
index 70c2c220..9f3b6dfe 100644
--- a/lambda/Dockerfile
+++ b/lambda/Dockerfile
@@ -8,7 +8,7 @@
 #   docker buildx build --platform linux/arm64 -f lambda/Dockerfile -o type=local,dest=.layers .
 #   docker buildx build --platform linux/amd64 -f lambda/Dockerfile -o type=local,dest=.layers .
 
-FROM alpine:3.23@sha256:5b10f432ef3da1b8d4c7eb6c487f2f5a8f096bc91145e68878dd4a5019afde11
+FROM alpine:3.23@sha256:fd791d74b68913cbb027c6546007b3f0d3bc45125f797758156952bc2d6daf40
 
 # Install build dependencies from build.zig:
 # - zlib-dev/zlib-static: linkSystemLibrary("z")
diff --git a/lambda/docker-compose.yml b/lambda/docker-compose.yml
index 0df8d586..96ac03b6 100644
--- a/lambda/docker-compose.yml
+++ b/lambda/docker-compose.yml
@@ -11,7 +11,7 @@ services:
 
   # Lambda extension test using AWS Lambda RIE
   lambda-test:
-    image: public.ecr.aws/lambda/python:3.12-arm64@sha256:16d7766894d193fdba44ccf67842a4a0ed89f782d699e10cf76c3a3952a149e8
+    image: public.ecr.aws/lambda/python:3.12-arm64@sha256:c9fd9d2fc23650025f6288ddb1bd629b9f395252781ed4e924ad49b3479838be
     platform: linux/arm64
     ports:
       - "9000:8080"
@@ -36,7 +36,7 @@ services:
 
   # Optional: Mock upstream for testing without real Datadog
   mock-upstream:
-    image: nginx:alpine@sha256:f46cb72c7df02710e693e863a983ac42f6a9579058a59a35f1ae36c9958e4ce0
+    image: nginx:alpine@sha256:54f2a904c251d5a34adf545a72d32515a15e08418dae0266e23be2e18c66fefa
     ports:
       - "9001:80"
     volumes: