diff --git a/packages/contracts-bedrock/scripts/getting-started/config.sh b/packages/contracts-bedrock/scripts/getting-started/config.sh
index 510c43f5628a..a17b05eb497a 100755
--- a/packages/contracts-bedrock/scripts/getting-started/config.sh
+++ b/packages/contracts-bedrock/scripts/getting-started/config.sh
@@ -34,8 +34,8 @@ config=$(cat << EOL
 
   "l1ChainID": 11155111,
   "l2ChainID": 1988,
-  "l2BlockTime": 9,
-  "l1BlockTime": 10,
+  "l2BlockTime": 10,
+  "l1BlockTime": 12,
 
   "maxSequencerDrift": 600,
   "sequencerWindowSize": 3600,