diff --git a/README.md b/README.md
index 4f8e8830b..a3377a6f7 100644
--- a/README.md
+++ b/README.md
@@ -185,7 +185,7 @@ Now skip to the "Mac: Build and install the AWS Encryption SDK for C" section be
 
 Build and install aws-c-common:
 
-    git clone -b v0.3.15 https://github.com/awslabs/aws-c-common.git
+    git clone -b v0.4.42 https://github.com/awslabs/aws-c-common.git
     mkdir build-aws-c-common && cd build-aws-c-common
     cmake -G Xcode -DBUILD_SHARED_LIBS=ON ../aws-c-common
     xcodebuild -target install ; cd ..
diff --git a/codebuild/bin/install-aws-deps.sh b/codebuild/bin/install-aws-deps.sh
index 02cd06629..4d9c5cdb7 100755
--- a/codebuild/bin/install-aws-deps.sh
+++ b/codebuild/bin/install-aws-deps.sh
@@ -62,5 +62,5 @@ for libtype in shared static; do
     root=/deps/$libtype
 
     # not installing aws-c-common anymore because aws-sdk-cpp installs it for us
-    build_pkg $root/install https://github.com/aws/aws-sdk-cpp.git 1.7.163 $CMAKE_ARGS -DBUILD_ONLY=kms -DENABLE_UNITY_BUILD=ON
+    build_pkg $root/install https://github.com/aws/aws-sdk-cpp.git 1.8.32 $CMAKE_ARGS -DBUILD_ONLY=kms
 done
diff --git a/codebuild/ubuntu-latest-x64.Dockerfile b/codebuild/ubuntu-latest-x64.Dockerfile
index 11da0f18a..d05cab9a0 100644
--- a/codebuild/ubuntu-latest-x64.Dockerfile
+++ b/codebuild/ubuntu-latest-x64.Dockerfile
@@ -14,7 +14,7 @@
 FROM ubuntu:latest
 
 # Needed for setup-apt-cache.sh
-ADD https://mirrors.kernel.org/ubuntu/pool/main/n/net-tools/net-tools_1.60+git20161116.90da8a0-2ubuntu1_amd64.deb /tmp
+ADD https://mirrors.kernel.org/ubuntu/pool/main/n/net-tools/net-tools_1.60+git20180626.aebd88e-1ubuntu1_amd64.deb /tmp
 ADD https://mirrors.kernel.org/ubuntu/pool/universe/n/netcat/netcat-traditional_1.10-40_amd64.deb /tmp
 RUN dpkg -i /tmp/net-tools_*.deb /tmp/netcat-*.deb