diff --git a/Dockerfile b/Dockerfile
index df41146f..33e0b8ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Stage 1: Install ADOT nodejs instrumentation in the /operator-build folder
-FROM node:20 AS build
+FROM public.ecr.aws/docker/library/node:20 AS build
 
 # Build the ADOT JS SDK Tarball: aws-aws-distro-opentelemetry-node-autoinstrumentation-x.y.z.tgz
 WORKDIR /adot-js-build
@@ -18,7 +18,7 @@ RUN npm install aws-aws-distro-opentelemetry-node-autoinstrumentation-$(node -p
 RUN npm install
 
 # Stage 2: Build the cp-utility binary
-FROM rust:1.75 as builder
+FROM public.ecr.aws/docker/library/rust:1.75 as builder
 
 WORKDIR /usr/src/cp-utility
 COPY ./tools/cp-utility .
diff --git a/contract-tests/images/applications/aws-sdk/Dockerfile b/contract-tests/images/applications/aws-sdk/Dockerfile
index c4f3c62e..1867b3cc 100644
--- a/contract-tests/images/applications/aws-sdk/Dockerfile
+++ b/contract-tests/images/applications/aws-sdk/Dockerfile
@@ -1,6 +1,5 @@
 # Use an official Node.js runtime as the base image
-FROM node:20-alpine
-#FROM node:20
+FROM public.ecr.aws/docker/library/node:20-alpine
 
 # Set the working directory inside the container
 WORKDIR /aws-sdk
diff --git a/contract-tests/images/applications/http/Dockerfile b/contract-tests/images/applications/http/Dockerfile
index 70a52dea..9dad7e06 100644
--- a/contract-tests/images/applications/http/Dockerfile
+++ b/contract-tests/images/applications/http/Dockerfile
@@ -1,6 +1,5 @@
 # Use an official Node.js runtime as the base image
-FROM node:20-alpine
-#FROM node:20
+FROM public.ecr.aws/docker/library/node:20-alpine
 
 # Set the working directory inside the container
 WORKDIR /http
diff --git a/contract-tests/images/applications/mongodb/Dockerfile b/contract-tests/images/applications/mongodb/Dockerfile
index 968c8257..a1d192aa 100644
--- a/contract-tests/images/applications/mongodb/Dockerfile
+++ b/contract-tests/images/applications/mongodb/Dockerfile
@@ -1,5 +1,5 @@
 # Use an official Node.js runtime as the base image
-FROM node:20-alpine
+FROM public.ecr.aws/docker/library/node:20-alpine
 
 # Set the working directory inside the container
 WORKDIR /mongodb
diff --git a/contract-tests/images/applications/mongoose/Dockerfile b/contract-tests/images/applications/mongoose/Dockerfile
index ee6a8a79..e8fd855e 100644
--- a/contract-tests/images/applications/mongoose/Dockerfile
+++ b/contract-tests/images/applications/mongoose/Dockerfile
@@ -1,5 +1,5 @@
 # Use an official Node.js runtime as the base image
-FROM node:20-alpine
+FROM public.ecr.aws/docker/library/node:20-alpine
 #FROM node:20
 
 # Set the working directory inside the container
diff --git a/contract-tests/images/applications/mysql2/Dockerfile b/contract-tests/images/applications/mysql2/Dockerfile
index 2e6ff46d..f24939a5 100644
--- a/contract-tests/images/applications/mysql2/Dockerfile
+++ b/contract-tests/images/applications/mysql2/Dockerfile
@@ -1,5 +1,5 @@
 # Use an official Node.js runtime as the base image
-FROM node:20-alpine
+FROM public.ecr.aws/docker/library/node:20-alpine
 
 # Set the working directory inside the container
 WORKDIR /mysql2