diff --git a/.ci/bootstrap.bat b/.ci/bootstrap.bat
index a924fc92b..1fd9014c9 100644
--- a/.ci/bootstrap.bat
+++ b/.ci/bootstrap.bat
@@ -16,6 +16,6 @@ echo Extracting %MINGW% as C++ Compiler
 %MINGW% -y -o"./internal/c/c_compiler/"
 
 echo Bootstrapping QB64
-internal\c\c_compiler\bin\mingw32-make.exe OS=win BUILD_QB64=y EXE=.\qb64_bootstrap.exe
+internal\c\c_compiler\bin\mingw32-make.exe -j8 OS=win BUILD_QB64=y EXE=.\qb64_bootstrap.exe
 IF ERRORLEVEL 1 exit /b 1
 
diff --git a/.ci/bootstrap.sh b/.ci/bootstrap.sh
index 01ea9c80e..fca5d9d67 100755
--- a/.ci/bootstrap.sh
+++ b/.ci/bootstrap.sh
@@ -3,7 +3,7 @@
 OS=$1
 
 echo -n "Bootstrapping QB64..."
-make OS=$OS BUILD_QB64=y EXE=./qb64_bootstrap
+make -j8 OS=$OS BUILD_QB64=y EXE=./qb64_bootstrap
 
 if [ $? -ne 0 ]; then
   echo "QB64 bootstrap failed"
diff --git a/.ci/compile.sh b/.ci/compile.sh
index 36094e109..ada051fd9 100755
--- a/.ci/compile.sh
+++ b/.ci/compile.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+os=$1
+
 ./qb64_bootstrap -x -w source/qb64.bas
 SUCCESS=$?
 
@@ -11,6 +13,6 @@ rm internal/temp/qb64_bootstrap.sym
 
 mv internal/temp/* internal/source/
 
-make clean OS=lnx
+make clean OS=$os
 
 exit $SUCCESS
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fb5bedd5e..207248487 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -68,7 +68,7 @@ jobs:
 
     - name: Compile Linux/OSX
       if: ${{ matrix.os == 'ubuntu-latest' || matrix.os == 'macos-latest' }}
-      run: .ci/compile.sh
+      run: .ci/compile.sh ${{ matrix.prefix }}
 
     - name: Compile Windows
       if: ${{ matrix.os == 'windows-latest' }}