diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9f16d5b..30aca51 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -46,7 +46,7 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         GITHUB_TOKEN_READONLY: ${{ secrets.GITHUBTOKENREADONLY }}
       run: |
-        python autobuild.py write-build-plan build_plan.json
+        python -u autobuild.py write-build-plan build_plan.json
         $buildPlan = Get-Content build_plan.json -Raw
         echo "::set-output name=build-plan::$buildPlan"
 
@@ -56,7 +56,7 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         GITHUB_TOKEN_READONLY: ${{ secrets.GITHUBTOKENREADONLY }}
       run: |
-        python autobuild.py clean-assets
+        python -u autobuild.py clean-assets
 
     - name: Show build queue
       if: steps.check.outputs.build-plan != '[]'
@@ -64,7 +64,7 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         GITHUB_TOKEN_READONLY: ${{ secrets.GITHUBTOKENREADONLY }}
       run: |
-        python autobuild.py show
+        python -u autobuild.py show
 
   build:
     needs: schedule
@@ -145,4 +145,4 @@ jobs:
         $BUILD_ROOT='C:\_'
         $MSYS2_ROOT=(msys2 -c 'cygpath -w /')
         Get-PSDrive -PSProvider FileSystem
-        python autobuild.py build ${{ matrix.build-args }} "$MSYS2_ROOT" "$BUILD_ROOT"
+        python -u autobuild.py build ${{ matrix.build-args }} "$MSYS2_ROOT" "$BUILD_ROOT"
diff --git a/autobuild.py b/autobuild.py
index 1c1bcf9..c73e042 100755
--- a/autobuild.py
+++ b/autobuild.py
@@ -246,12 +246,10 @@ def fresh_git_repo(url: str, path: _PathLike) -> Generator:
 @contextmanager
 def gha_group(title: str) -> Generator:
     print(f'\n::group::{title}')
-    stdout.flush()
     try:
         yield
     finally:
         print('::endgroup::')
-        stdout.flush()
 
 
 class BuildError(Exception):
@@ -354,7 +352,7 @@ def upload_asset(release: GitRelease, path: _PathLike, replace: bool = False,
         if can_try_upload_again():
             upload()
 
-    print(f"Uploaded {asset_name} as {asset_label}", flush=True)
+    print(f"Uploaded {asset_name} as {asset_label}")
 
 
 def get_python_path(msys2_root: _PathLike, msys2_path: _PathLike) -> Path:
@@ -400,7 +398,7 @@ def staging_dependencies(
         with ThreadPoolExecutor(8) as executor:
             for i, item in enumerate(executor.map(fetch_item, todo)):
                 asset_path, asset = item
-                print(f"[{i + 1}/{len(todo)}] {get_asset_filename(asset)}", flush=True)
+                print(f"[{i + 1}/{len(todo)}] {get_asset_filename(asset)}")
                 package_paths.append(asset_path)
 
         repo_name = f"autobuild-{repo_type}"
@@ -1399,9 +1397,8 @@ def wait_for_api_limit_reset(
                 wait = min_sleep
             elif wait > max_sleep:
                 wait = max_sleep
-            print(f"Too few API calls left, waiting for {wait} seconds", flush=True)
+            print(f"Too few API calls left, waiting for {wait} seconds")
             time.sleep(wait)
-    stdout.flush()
 
 
 def clean_environ(environ: Dict[str, str]) -> Dict[str, str]: