diff --git a/.github/workflows/ci-workflow.yml b/.github/workflows/ci-workflow.yml
index 01002e407..8033fcb17 100644
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -6,6 +6,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
+        with:
+          submodules: true
       - run: make -j2 PLATFORM=simulator TARGET=android
       - uses: actions/upload-artifact@master
         with:
@@ -17,6 +19,8 @@ jobs:
       - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
       - uses: numworks/setup-arm-toolchain@v1
       - uses: actions/checkout@v1
+        with:
+          submodules: true
       - run: make -j2 MODEL=n0100 epsilon.dfu
       - run: make -j2 MODEL=n0100 epsilon.onboarding.dfu
       - run: make -j2 MODEL=n0100 epsilon.onboarding.update.dfu
@@ -34,6 +38,8 @@ jobs:
       - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
       - uses: numworks/setup-arm-toolchain@v1
       - uses: actions/checkout@v1
+        with:
+          submodules: true
       - run: make -j2 epsilon.dfu
       - run: make -j2 epsilon.onboarding.dfu
       - run: make -j2 epsilon.onboarding.update.dfu
@@ -47,19 +53,6 @@ jobs:
           name: epsilon-device-n0110.dfu
           path: output/release/device/n0110/epsilon.dfu
       - run: make -j2 test.elf
-  build-simulator-windows:
-    runs-on: windows-latest
-    steps:
-      - uses: numworks/setup-msys2@v1
-      - uses: actions/checkout@v1
-      - run: msys2do pacman -S --noconfirm mingw-w64-x86_64-gcc mingw-w64-x86_64-freetype mingw-w64-x86_64-pkg-config make mingw-w64-x86_64-python3 mingw-w64-x86_64-libjpeg-turbo mingw-w64-x86_64-libpng
-      - run: msys2do make -j2 PLATFORM=simulator
-      - uses: actions/upload-artifact@master
-        with:
-          name: epsilon-simulator-windows.exe
-          path: output/release/simulator/windows/epsilon.exe
-      - run: msys2do make -j2 PLATFORM=simulator test.headless.exe
-      - run: output\release\simulator\windows\test.headless.exe
   build-simulator-web:
     runs-on: ubuntu-latest
     steps:
@@ -67,6 +60,8 @@ jobs:
         with:
           sdk: latest-fastcomp
       - uses: actions/checkout@v1
+        with:
+          submodules: true
       - run: make -j2 PLATFORM=simulator TARGET=web
       - uses: actions/upload-artifact@master
         with:
@@ -79,6 +74,8 @@ jobs:
     steps:
       - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
       - uses: actions/checkout@v1
+        with:
+          submodules: true
       - run: make -j2 PLATFORM=simulator
       - uses: actions/upload-artifact@master
         with:
@@ -86,25 +83,3 @@ jobs:
           path: output/release/simulator/linux/epsilon.bin
       - run: make -j2 PLATFORM=simulator test.headless.bin
       - run: output/release/simulator/linux/test.headless.bin
-  build-simulator-macos:
-    runs-on: macOS-latest
-    steps:
-      - run: brew install numworks/tap/epsilon-sdk
-      - uses: actions/checkout@v1
-      - run: make -j2 PLATFORM=simulator
-      - uses: actions/upload-artifact@master
-        with:
-          name: epsilon-simulator-macos.zip
-          path: output/release/simulator/macos/app/Payload
-      - run: make -j2 PLATFORM=simulator ARCH=x86_64 test.headless.bin
-      - run: output/release/simulator/macos/x86_64/test.headless.bin
-  build-simulator-ios:
-    runs-on: macOS-latest
-    steps:
-      - run: brew install numworks/tap/epsilon-sdk
-      - uses: actions/checkout@v1
-      - run: make -j2 PLATFORM=simulator TARGET=ios EPSILON_TELEMETRY=0
-      - uses: actions/upload-artifact@master
-        with:
-          name: epsilon-simulator-ios.ipa
-          path: output/release/simulator/ios/app/epsilon.ipa