diff --git a/.github/workflows/build_pixracer_pro.yml b/.github/workflows/build_pixracer_pro.yml
index 2cd9581..3a9f144 100644
--- a/.github/workflows/build_pixracer_pro.yml
+++ b/.github/workflows/build_pixracer_pro.yml
@@ -9,8 +9,6 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: update
-      run: sudo apt update
     - name: checkout submodules
       run: git submodule update --init --recursive
     - name: install toolchain
@@ -18,4 +16,4 @@ jobs:
     - name: check toolchain
       run: arm-none-eabi-gcc --version
     - name: build
-      run: cd pixracer_pro && mkdir build && cd build && cmake .. && make
+      run: cd pixracer_pro && mkdir build && cd build && cmake .. && make -j16
diff --git a/.github/workflows/build_varmint_10X.yml b/.github/workflows/build_varmint_10X.yml
index 5733fe3..154c972 100644
--- a/.github/workflows/build_varmint_10X.yml
+++ b/.github/workflows/build_varmint_10X.yml
@@ -9,8 +9,6 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: update
-      run: sudo apt update
     - name: checkout submodules
       run: git submodule update --init --recursive
     - name: install toolchain
@@ -18,4 +16,4 @@ jobs:
     - name: check toolchain
       run: arm-none-eabi-gcc --version
     - name: build varmint
-      run: cd varmint_10X && mkdir build && cd build && cmake .. && make
+      run: cd varmint_10X && mkdir build && cd build && cmake .. && make -j16