diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 39e21c5e..20bc2604 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ 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.952+0c091feb5.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.959+f011f1393.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:
@@ -49,10 +49,10 @@ jobs:
         run: choco install git
       - name: Setup Zig
         run: |
-          Invoke-WebRequest -Uri "https://ziglang.org/builds/zig-windows-x86_64-0.9.0-dev.952+0c091feb5.zip" -OutFile "C:\zig.zip"
+          Invoke-WebRequest -Uri "https://ziglang.org/builds/zig-windows-x86_64-0.9.0-dev.959+f011f1393.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.952+0c091feb5\"
+          Add-Content $env:GITHUB_PATH "C:\zig-windows-x86_64-0.9.0-dev.959+f011f1393\"
       # TODO(windows): `zig build test -Dtarget=x86_64-macos` fails - see hexops/mach#8
       # - name: x86_64-windows -> x86_64-macos
       #   run: zig build install -Dtarget=x86_64-macos
@@ -79,7 +79,7 @@ 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.952+0c091feb5.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.959+f011f1393.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
       - name: mach::test
         run: zig build test
         env: