diff --git a/libs/gpu-dawn/.github/workflows/ci.yml b/libs/gpu-dawn/.github/workflows/ci.yml
index d7db42bf..8ca0d22a 100644
--- a/libs/gpu-dawn/.github/workflows/ci.yml
+++ b/libs/gpu-dawn/.github/workflows/ci.yml
@@ -41,7 +41,7 @@ jobs:
       - name: Clone mach-glfw
         run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: install (release-fast)
-        run: zig build install -Drelease-fast=true -Dtarget=x86_64-linux-gnu
+        run: zig build install -Doptimize=ReleaseFast -Dtarget=x86_64-linux-gnu
       - name: upload (release-fast)
         run: ./dev/upload-release.sh
         env:
@@ -83,7 +83,7 @@ jobs:
       - name: Clone mach-glfw
         run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: install (release-fast)
-        run: zig build install -Drelease-fast=true -Dtarget=x86_64-linux-musl
+        run: zig build install -Doptimize=ReleaseFast -Dtarget=x86_64-linux-musl
       - name: upload (release-fast)
         run: ./dev/upload-release.sh
         env:
@@ -125,7 +125,7 @@ jobs:
       - name: Clone mach-glfw
         run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: install (release-fast)
-        run: zig build install -Drelease-fast=true -Dtarget=aarch64-linux-gnu
+        run: zig build install -Doptimize=ReleaseFast -Dtarget=aarch64-linux-gnu
       - name: upload (release-fast)
         run: ./dev/upload-release.sh
         env:
@@ -167,7 +167,7 @@ jobs:
       - name: Clone mach-glfw
         run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: install (release-fast)
-        run: zig build install -Drelease-fast=true -Dtarget=aarch64-linux-musl
+        run: zig build install -Doptimize=ReleaseFast -Dtarget=aarch64-linux-musl
       - name: upload (release-fast)
         run: ./dev/upload-release.sh
         env:
@@ -217,7 +217,7 @@ jobs:
       - name: Clone mach-glfw
         run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: install (release-fast)
-        run: zig build install -Dtarget=x86_64-windows-gnu -Drelease-fast=true
+        run: zig build install -Dtarget=x86_64-windows-gnu -Doptimize=ReleaseFast
       - name: upload (release-fast)
         run: ./dev/upload-release.sh
         shell: bash
@@ -265,7 +265,7 @@ jobs:
       - name: Clone mach-glfw
         run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: install (release-fast)
-        run: zig build install -Drelease-fast=true -Dtarget=x86_64-macos.12-none
+        run: zig build install -Doptimize=ReleaseFast -Dtarget=x86_64-macos.12-none
         env:
           AGREE: true
       - name: upload (release-fast)
diff --git a/libs/gpu-dawn/.github/workflows/m1_ci.yml b/libs/gpu-dawn/.github/workflows/m1_ci.yml
index 9b90d671..3ab5adf5 100644
--- a/libs/gpu-dawn/.github/workflows/m1_ci.yml
+++ b/libs/gpu-dawn/.github/workflows/m1_ci.yml
@@ -30,7 +30,7 @@ jobs:
           RELEASE_NAME: aarch64-macos-none_debug
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: install (release-fast)
-        run: zig build install -Drelease-fast=true -Dtarget=aarch64-macos.12-none
+        run: zig build install -Doptimize=ReleaseFast -Dtarget=aarch64-macos.12-none
         env:
           AGREE: true
       - name: upload (release-fast)
diff --git a/libs/gpu-dawn/README.md b/libs/gpu-dawn/README.md
index eba6e8c0..416b2fe5 100644
--- a/libs/gpu-dawn/README.md
+++ b/libs/gpu-dawn/README.md
@@ -31,7 +31,7 @@ This will take ~10 minutes to finish (see the 'binary releases' section below.)
 
 | Option                        | Description                                                |
 |-------------------------------|------------------------------------------------------------|
-| `-Drelease-fast=true`         | Build a release binary instead of a debug binary (default) |
+| `-Doptimize=ReleaseFast`      | Build a release binary instead of a debug binary (default) |
 | `-Dtarget=x86_64-macos.12`    | Cross compile to macOS (Intel chipsets)                    |
 | `-Dtarget=aarch64-macos.12`   | Cross compile to macOS (Apple Silicon)                     |
 | `-Dtarget=x86_64-linux-gnu`   | Cross compile to x86_64 Linux (glibc)                      |