diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 5afadb86..2460cc32 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -34,6 +34,8 @@ jobs:
       - name: Build-Library
         if: ${{ steps.cache-spidermonkey.outputs.cache-hit != 'true' }}
         run: |
+          # Get number of CPU cores
+          CPUS=$(getconf _NPROCESSORS_ONLN 2>/dev/null || getconf NPROCESSORS_ONLN 2>/dev/null || echo 1)
           echo "Building SpiderMonkey"
           #install rust compiler
           curl --proto '=https' --tlsv1.3 https://sh.rustup.rs -sSf | sh -s -- -y
@@ -48,14 +50,14 @@ jobs:
           mkdir _build
           cd _build
           ../configure --disable-jemalloc --with-system-zlib --with-intl-api --enable-optimize
-          make
+          make -j$CPUS
           sudo make install
           cd ../../../..
           echo "Building the library"
           mkdir build
           cd build
           cmake ..
-          cmake --build .
+          cmake --build . -j$CPUS
           echo "Build complete"
       - name: google-tests
         run: |
diff --git a/build_script.sh b/build_script.sh
index 3c0c5a43..e985294e 100755
--- a/build_script.sh
+++ b/build_script.sh
@@ -1,3 +1,6 @@
+# Get number of CPU cores
+CPUS=$(getconf _NPROCESSORS_ONLN 2>/dev/null || getconf NPROCESSORS_ONLN 2>/dev/null || echo 1)
+
 DIR="build"
 if [  ! -d "$DIR" ]; then
   ### Take action if $DIR exists ###
@@ -6,4 +9,4 @@ fi
 
 cd build
 cmake ..
-cmake --build .
\ No newline at end of file
+cmake --build . -j$CPUS
\ No newline at end of file
diff --git a/setup.sh b/setup.sh
index 43315e43..601042bd 100755
--- a/setup.sh
+++ b/setup.sh
@@ -1,3 +1,6 @@
+# Get number of CPU cores
+CPUS=$(getconf _NPROCESSORS_ONLN 2>/dev/null || getconf NPROCESSORS_ONLN 2>/dev/null || echo 1)
+
 apt-get update --yes
 apt-get upgrade --yes
 apt-get install cmake python3-dev python3-pytest doxygen graphviz gcovr llvm g++ pkg-config m4 --yes
@@ -13,5 +16,5 @@ chmod +x ./configure
 mkdir _build
 cd _build
 ../configure --disable-jemalloc --with-system-zlib --with-intl-api --enable-optimize
-make
+make -j$CPUS
 make install
\ No newline at end of file