diff --git a/aws_lambda/buildspec.yml b/aws_lambda/buildspec.yml
index 9e5c484..93ec873 100644
--- a/aws_lambda/buildspec.yml
+++ b/aws_lambda/buildspec.yml
@@ -6,9 +6,10 @@ phases:
       golang: 1.13 #Dummy, as this is a required parameter
   pre_build:
     commands:
-       - yum install -y cmake3 git gcc gcc-c++ make libc6
+       - yum install -y cmake3 git gcc gcc-c++ make
        - git clone https://github.com/awslabs/aws-lambda-cpp.git
        - cd aws-lambda-cpp
+       - git checkout 4aa6639808fe03b5664edc95963e289d7444820d
        - mkdir build
        - cd build
        - cmake3 .. -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=~/out