diff --git a/.github/workflows/nightly_build.yml b/.github/workflows/nightly_build.yml
index 5c5122570d..905a6cb644 100644
--- a/.github/workflows/nightly_build.yml
+++ b/.github/workflows/nightly_build.yml
@@ -75,6 +75,12 @@ jobs:
           command: clippy
           args: --workspace --all-targets -- -D warnings
 
+      - name: Reclaim some disk space (because Windows is being annoying)
+        uses: actions-rs/cargo@v1
+        if: ${{ matrix.os == 'windows-latest' }}
+        with:
+          command: clean
+
       # COCONUT stuff
       - name: Build all binaries with coconut enabled
         uses: actions-rs/cargo@v1