diff --git a/.circleci/config.yml b/.circleci/config.yml
index 53b7ac2fb9ba3e620bf79eb411633476dc34839b..68fbfe772b96457173dfa191352797178ffa45bd 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -15,7 +15,7 @@ jobs:
       - run: git submodule update --init --recursive
 
       - run: apt -y install xz-utils jq
-      - run: ./download_zig.sh 0.9.0-dev.1524+d2f9646d9
+      - run: ./download_zig.sh 0.9.0-dev.1815+20e19e75f
       - run: zig version
       - run: zig env
       - run: zig build -Dbootstrap
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index b6093419dc307a88537fb666b9004eeb4e2d3bf8..95353e19bfd793029987c149061762b270b591bd 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Setup Zig
         uses: goto-bus-stop/setup-zig@v1
         with:
-          version: 0.9.0-dev.1524+d2f9646d9
+          version: 0.9.0-dev.1815+20e19e75f
 
       - run: zig version
       - run: zig env