diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 59c1e503..5e41fe5a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
       - name: Setup Zig
         run: |
           sudo apt install xz-utils
-          sudo sh -c 'wget -c https://ziglang.org/builds/zig-linux-x86_64-0.9.0-dev.347+628f490c5.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
+          sudo sh -c 'wget -c https://ziglang.org/builds/zig-linux-x86_64-0.9.0-dev.642+b87105c92.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
       - name: x86_64-linux -> x86_64-macos
         run: zig build test -Dtarget=x86_64-macos
         env:
@@ -33,10 +33,10 @@ jobs:
         run: choco install git
       - name: Setup Zig
         run: |
-          Invoke-WebRequest -Uri "https://ziglang.org/builds/zig-windows-x86_64-0.9.0-dev.441+7b5d139fd.zip" -OutFile "C:\zig.zip"
+          Invoke-WebRequest -Uri "https://ziglang.org/builds/zig-windows-x86_64-0.9.0-dev.642+b87105c92.zip" -OutFile "C:\zig.zip"
           cd C:\
           7z x zig.zip
-          Add-Content $env:GITHUB_PATH "C:\zig-windows-x86_64-0.9.0-dev.441+7b5d139fd\"
+          Add-Content $env:GITHUB_PATH "C:\zig-windows-x86_64-0.9.0-dev.642+b87105c92\"
       - name: x86_64-windows -> x86_64-macos
         # TODO(slimsag): bug: `zig build test -Dtarget=x86_64-macos` fails on Windows with `error: Unexpected`
         # Maybe an issue in final linking? Maybe it's trying to run the Mac binary? Needs investigation
@@ -62,7 +62,7 @@ jobs:
       - name: Setup Zig
         run: |
           brew install xz
-          sudo sh -c 'wget -c https://ziglang.org/builds/zig-macos-x86_64-0.9.0-dev.453+7ef854682.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
+          sudo sh -c 'wget -c https://ziglang.org/builds/zig-macos-x86_64-0.9.0-dev.642+b87105c92.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
       - name: mach::test
         run: zig build test
         env: