diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 00ba11e5e..ed5e14fa7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ concurrency:
   cancel-in-progress: true
 
 env:
-  NPROC: 1
+  NPROC: 2
   MAKEFLAGS: "-j${NPROC}"
   NIMFLAGS: "--parallelBuild:${NPROC} --colors:off -d:chronicles_colors:none"
 
@@ -63,7 +63,7 @@ jobs:
             cc: gcc
           - os: macos-15
             cpu: arm64
-            cc: clang
+            cc: gcc
           - os: windows
             cpu: amd64
             cc: gcc
@@ -95,7 +95,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup MSYS2 (Windows/gcc)
-        if: runner.os == 'Windows' && matrix.platform.cc == 'gcc'
+        if: runner.os == 'Windows'
         uses: msys2/setup-msys2@v2
         with:
           update: true
@@ -121,12 +121,19 @@ jobs:
             mingw-w64-x86_64-nimble
             mingw-w64-x86_64-nasm
 
-      - name: Use gcc-14
+      - name: Use gcc-14 (Linux)
         if: matrix.platform.os == 'linux-gcc-14'
         run: |
           sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 14
           sudo update-alternatives --set gcc /usr/bin/gcc-14
 
+      - name: Use Homebrew gcc (macOS)
+        if: runner.os == 'macOS'
+        run: |
+          GCC=$(ls /usr/local/bin/gcc-* /opt/homebrew/bin/gcc-* 2>/dev/null | sort -V | tail -1)
+          echo "Using GCC: ${GCC}"
+          sudo ln -sf "${GCC}" /usr/local/bin/gcc
+
       - name: Install Nim (pinned)
         uses: iffy/install-nim@v5
         with:
@@ -184,12 +191,7 @@ jobs:
           find . -name ssl_server_full_ec.o -exec file {} \;
 
       - name: Build binaries
-        run: |
-          CC_FLAGS=""
-          if [[ '${{ matrix.platform.cc }}' == 'clang' ]]; then
-            CC_FLAGS="--cc:clang"
-          fi
-          make V=1 QUICK_AND_DIRTY_COMPILER=1 NIM_PARAMS="-d:BORINGSS_USE_ASM=false ${CC_FLAGS}" USE_LIBBACKTRACE=0 all
+        run: make V=1 QUICK_AND_DIRTY_COMPILER=1 USE_LIBBACKTRACE=0 all
 
   build-windows:
     needs: changes
@@ -213,7 +215,7 @@ jobs:
             cc: gcc
           - os: macos-15
             cpu: arm64
-            cc: clang
+            cc: gcc
           - os: windows
             cpu: amd64
             cc: gcc
@@ -245,7 +247,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup MSYS2 (Windows/gcc)
-        if: runner.os == 'Windows' && matrix.platform.cc == 'gcc'
+        if: runner.os == 'Windows'
         uses: msys2/setup-msys2@v2
         with:
           update: true
@@ -271,12 +273,19 @@ jobs:
             mingw-w64-x86_64-nimble
             mingw-w64-x86_64-nasm
 
-      - name: Use gcc-14
+      - name: Use gcc-14 (Linux)
         if: matrix.platform.os == 'linux-gcc-14'
         run: |
           sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 14
           sudo update-alternatives --set gcc /usr/bin/gcc-14
 
+      - name: Use Homebrew gcc (macOS)
+        if: runner.os == 'macOS'
+        run: |
+          GCC=$(ls /usr/local/bin/gcc-* /opt/homebrew/bin/gcc-* 2>/dev/null | sort -V | tail -1)
+          echo "Using GCC: ${GCC}"
+          sudo ln -sf "${GCC}" /usr/local/bin/gcc
+
       - name: Install Nim (pinned)
         uses: iffy/install-nim@v5
         with:
@@ -339,10 +348,6 @@ jobs:
             export NIMFLAGS="--colors:off -d:chronicles_colors:none"
           fi
 
-          if [[ '${{ matrix.platform.cc }}' == 'clang' ]]; then
-            export NIMFLAGS="${NIMFLAGS} --cc:clang"
-          fi
-
           export MAKEFLAGS="-j1"
           export USE_LIBBACKTRACE=0