--- a/.env
+++ b/.env
@@ -1,5 +1,5 @@
 RUST_TOOLCHAIN=nightly-2022-07-24
-POLKADOT_BUILD_BRANCH=release-v0.9.27
+POLKADOT_BUILD_BRANCH=release-v0.9.29
 
 POLKADOT_MAINNET_BRANCH=release-v0.9.26
 UNIQUE_MAINNET_TAG=v924010