diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d78baac..33b6d61 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -120,13 +120,16 @@ jobs:
           tool: cargo-fuzz
       - name: Build fuzz targets
         working-directory: fuzz
-        run: cargo +nightly fuzz build
+        # Pin to the gnu target — cargo-fuzz defaults to musl for ASAN
+        # static linking, but the nightly toolchain we install doesn't
+        # ship a musl std.
+        run: cargo +nightly fuzz build --target x86_64-unknown-linux-gnu
       - name: Smoke-run every target
         working-directory: fuzz
         run: |
           for target in parse_command parse_radio_config cobs_decoder_feed cobs_roundtrip command_roundtrip cobs_decoder_multi_frame cobs_chunk_invariant; do
             echo "── $target ──"
-            cargo +nightly fuzz run "$target" -- -max_total_time=60
+            cargo +nightly fuzz run "$target" --target x86_64-unknown-linux-gnu -- -max_total_time=60
           done
 
   mutants: