diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2f7319726f1..7db60f9e434 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -389,28 +389,10 @@ jobs:
         shell: bash
         run: sudo apt install -y libssl-dev
 
-      - name: Build spacetimedb-update
-        run: cargo build --features github-token-auth --target ${{ matrix.target }} -p spacetimedb-update
-        if: runner.os == 'Windows'
-
-      - name: Run self-install
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        shell: bash
-        run: |
-          ROOT_DIR="$(mktemp -d)"
-          # NOTE(bfops): We need the `github-token-auth` feature because we otherwise tend to get ratelimited when we try to fetch `/releases/latest`.
-          # My best guess is that, on the GitHub runners, the "anonymous" ratelimit is shared by *all* users of that runner (I think this because it
-          # happens very frequently on the `macos-runner`, but we haven't seen it on any others).
-          cargo run --features github-token-auth --target ${{ matrix.target }} -p spacetimedb-update -- self-install --root-dir="${ROOT_DIR}" --yes
-          "${ROOT_DIR}"/spacetime --root-dir="${ROOT_DIR}" help
-        if: runner.os == 'Windows'
-
       - name: Test spacetimedb-update
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: cargo ci update-flow --target=${{ matrix.target }} --github-token-auth
-        if: runner.os != 'Windows'
 
   unreal_engine_tests:
     name: Unreal Engine Tests
diff --git a/tools/ci/src/main.rs b/tools/ci/src/main.rs
index 89507335753..b5436e5bec1 100644
--- a/tools/ci/src/main.rs
+++ b/tools/ci/src/main.rs
@@ -587,7 +587,12 @@ fn main() -> Result<()> {
                     .chain(["--", "self-install", &root_arg, "--yes"].into_iter()),
             )
             .run()?;
-            cmd!(format!("{}/spacetime", root_dir_string), &root_arg, "help",).run()?;
+
+            let mut spacetime_path = root_dir.path().join("spacetime");
+            if !std::env::consts::EXE_EXTENSION.is_empty() {
+                spacetime_path.set_extension(std::env::consts::EXE_EXTENSION);
+            }
+            cmd(spacetime_path, [&root_arg, "help"]).run()?;
         }
 
         Some(CiCmd::CliDocs { spacetime_path }) => {