diff --git a/Makefile b/Makefile
index c37805042e..bdee2d8e2d 100644
--- a/Makefile
+++ b/Makefile
@@ -132,3 +132,14 @@ clippyfix:
 .PHONY: cargofix ## cargo fix
 cargofix:
 	cd parachain && cargo fix --locked --allow-dirty --allow-staged --workspace --all
+
+.PHONY: clean-all-build ## clean up all build history
+clean-all-build:
+	@echo "Cleaning parachain..."
+	@cd parachain && cargo clean
+
+	@echo "Clean tee-worker/identity..."
+	@cd tee-worker/identity && make clean
+
+	@echo "Clean tee-worker/omni-worker..."
+	@cd tee-worker/omni-worker && make distclean
\ No newline at end of file
diff --git a/parachain/scripts/launch-network.sh b/parachain/scripts/launch-network.sh
index a75e6502df..44a3718547 100755
--- a/parachain/scripts/launch-network.sh
+++ b/parachain/scripts/launch-network.sh
@@ -68,7 +68,7 @@ if [ -f "$PARACHAIN_BIN" ]; then
   echo "found one, version:"
   ./litentry-collator --version
 else
-  echo "not here, copying from docker image if we are on Linux ..." 
+  echo "not here, copying from docker image if we are on Linux ..."
   if [ $(uname -s) = "Linux" ]; then
     docker cp "$(docker create --rm litentry/litentry-parachain:latest):/usr/local/bin/litentry-collator" .
     chmod +x litentry-collator
@@ -80,7 +80,7 @@ fi
 print_divider
 
 echo "launching zombienet network (in background), dir = $ZOMBIENET_DIR ..."
-$ZOMBIENET_BIN -d $ZOMBIENET_DIR -l silent spawn config.toml &
+nohup $ZOMBIENET_BIN -d $ZOMBIENET_DIR -l silent spawn config.toml > /dev/null 2>&1 &
 
 cd "$ROOTDIR/parachain/ts-tests"