diff --git a/solidity/build-tron.sh b/solidity/build-tron.sh
index 4470bc8ffc2..2be58d937ca 100755
--- a/solidity/build-tron.sh
+++ b/solidity/build-tron.sh
@@ -2,6 +2,10 @@
 set -e
 cd "$(dirname "$0")"
 
+# Ensure deterministic outputs for turbo cache: hardhat/typechain can emit
+# partial trees when incremental cache is reused against cleaned output dirs.
+rm -rf ./cache-tron ../typescript/tron-sdk/src/abi ../typescript/tron-sdk/src/typechain
+
 # Ensure soldeer dependencies are installed before patching files.
 # The regular @hyperlane-xyz/core build also runs soldeer install, and if it
 # runs concurrently with our file patches below, soldeer's git checkout fails