diff --git a/Earthfile b/Earthfile
index 5114347083..2d614d5bef 100644
--- a/Earthfile
+++ b/Earthfile
@@ -100,6 +100,9 @@ test-rust:
     # RUN echo "4" | cargo run --locked --release --features="target-x86" -- --target=x86_32 examples/benchmarks/NQueens.roc
     # RUN --mount=type=cache,target=$SCCACHE_DIR \
     #    cargo test --locked --release --features with_sound --test cli_run i386 --features="i386-cli-run" && sccache --show-stats
+    # make sure doc generation works (that is, make sure build.sh returns status code 0)
+    RUN bash www/build.sh
+
 
 verify-no-git-changes:
     FROM +test-rust