diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0236b01e31..adf2a9dc19 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -92,7 +92,9 @@ jobs:
           - name: "Self-hosted: Linux: gcc-12 TSAN WAVM"
             run: ./housekeeping/make_build.sh -DCLEAR_OBJS=ON -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain/gcc-12_cxx20.cmake -DTSAN=ON -DWASM_COMPILER=WAVM
           - name: "Self-hosted: Linux: clang-16 UBSAN"
-            run: ./housekeeping/make_build.sh -DCLEAR_OBJS=ON -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain/clang-16_cxx20.cmake -DUBSAN=ON
+            run: |
+              export BUILD_THREADS=4 && 
+              ./housekeeping/make_build.sh -DCLEAR_OBJS=ON -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain/clang-16_cxx20.cmake -DUBSAN=ON
           - name: "Self-hosted: Linux: clang-16 External Project"
             run: ./housekeeping/make_external_build.sh -DCLEAR_OBJS=ON -DCMAKE_TOOLCHAIN_FILE=../../cmake/toolchain/clang-16_cxx20.cmake
 
diff --git a/housekeeping/make_build.sh b/housekeeping/make_build.sh
index 6f526d891c..1cfe3c89c4 100755
--- a/housekeeping/make_build.sh
+++ b/housekeeping/make_build.sh
@@ -5,6 +5,8 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
+echo "env BUILD_THREADS=${BUILD_THREADS}"
+
 BUILD_DIR="${BUILD_DIR:?BUILD_DIR variable is not defined}"
 BUILD_FINAL_TARGET="${BUILD_FINAL_TARGET:-test}"
 
@@ -30,6 +32,8 @@ which git
 
 cd "$(dirname $0)/.."
 
+echo "using BUILD_THREADS=${BUILD_THREADS}"
+
 cmake . -B${BUILD_DIR} "$@" -DBACKWARD=OFF
 if [ "$BUILD_FINAL_TARGET" != "generated" ] ; then
   cmake --build "${BUILD_DIR}" -- -j${BUILD_THREADS}