diff --git a/buildspec.yml b/buildspec.yml
index a4bbdfc1..47d5a90b 100644
--- a/buildspec.yml
+++ b/buildspec.yml
@@ -1,9 +1,10 @@
 version: 0.2
 
 phases:
-  build:
+  install:
     runtime-versions:
-      python: 3.10
+      python: 3.9
+  build:
     commands:
       # CDK Version is defaulted to 2.82.0 if not mentioned using `-c`
       # Rosbag Image Pipeline