diff --git a/ci/e2e-tests/Dockerfile b/ci/e2e-tests/Dockerfile
index a92b838..4f4039c 100644
--- a/ci/e2e-tests/Dockerfile
+++ b/ci/e2e-tests/Dockerfile
@@ -6,7 +6,7 @@
 
 # This stage depends on a JDK image and uses Maven Wrapper to pull in dependencies and build the project
 # from source.
-FROM amazoncorretto:21-alpine@sha256:fda60fd7965970ce7ed7ce789b18418647b56ac6112fc17df006337bdc6355c4 AS build
+FROM amazoncorretto:21.0.11-alpine@sha256:a1734d6cd1e2a0483870d2144ec012dabf91db80172611d92b7ee4f0d8ed84d6 AS build
 ARG APP_NAME
 ARG APP_VERSION
 WORKDIR /build
@@ -35,7 +35,7 @@ RUN ./mvnw -B -o process-test-classes
 
 # This stage uses a JRE rather than JDK because it doesn't have to compile any Java sources.
 # It is assembling the runnable test container and packaging all its Maven dependencies
-FROM amazoncorretto:21-alpine@sha256:fda60fd7965970ce7ed7ce789b18418647b56ac6112fc17df006337bdc6355c4
+FROM amazoncorretto:21.0.11-alpine@sha256:a1734d6cd1e2a0483870d2144ec012dabf91db80172611d92b7ee4f0d8ed84d6
 ARG APP_NAME
 ARG APP_VERSION
 
diff --git a/ci/impl/Dockerfile b/ci/impl/Dockerfile
index fd65cf5..1f00cae 100644
--- a/ci/impl/Dockerfile
+++ b/ci/impl/Dockerfile
@@ -4,7 +4,7 @@
 ## Stage 1: Build and test the Java Sources
 ##
 
-FROM amazoncorretto:21-alpine@sha256:fda60fd7965970ce7ed7ce789b18418647b56ac6112fc17df006337bdc6355c4 AS build
+FROM amazoncorretto:21.0.11-alpine@sha256:a1734d6cd1e2a0483870d2144ec012dabf91db80172611d92b7ee4f0d8ed84d6 AS build
 ARG APP_NAME
 ARG APP_VERSION
 
@@ -34,7 +34,7 @@ RUN ./mvnw -B -X package
 
 # This stage uses a JRE rather than JDK because it doesn't have to build anything; it just runs the fat jar
 # produced by the previous stage.
-FROM amazoncorretto:21-alpine@sha256:fda60fd7965970ce7ed7ce789b18418647b56ac6112fc17df006337bdc6355c4
+FROM amazoncorretto:21.0.11-alpine@sha256:a1734d6cd1e2a0483870d2144ec012dabf91db80172611d92b7ee4f0d8ed84d6
 ARG APP_NAME
 ARG APP_VERSION