diff --git a/README.md b/README.md
index 54740ca9..1e1aa25c 100644
--- a/README.md
+++ b/README.md
@@ -91,12 +91,12 @@ Or:
 
 Unix users run
 
-    ./gyp_uv -f make
+    ./gyp_uv.py -f make
     make -C out
 
 Macintosh users run
 
-    ./gyp_uv -f xcode
+    ./gyp_uv.py -f xcode
     xcodebuild -project uv.xcodeproj -configuration Release -target All
 
 Note for UNIX users: compile your project with `-D_LARGEFILE_SOURCE` and
diff --git a/gyp_uv b/gyp_uv.py
similarity index 100%
rename from gyp_uv
rename to gyp_uv.py
diff --git a/vcbuild.bat b/vcbuild.bat
index 1b2f865a..0b7ea481 100644
--- a/vcbuild.bat
+++ b/vcbuild.bat
@@ -91,7 +91,7 @@ exit /b 1
 
 :have_gyp
 if not defined PYTHON set PYTHON="python"
-%PYTHON% gyp_uv -Dtarget_arch=%target_arch% -Dlibrary=%library%
+%PYTHON% gyp_uv.py -Dtarget_arch=%target_arch% -Dlibrary=%library%
 if errorlevel 1 goto create-msvs-files-failed
 if not exist uv.sln goto create-msvs-files-failed
 echo Project files generated.