diff --git a/.gitignore b/.gitignore
index 4269200..fdf5da0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,3 +47,5 @@ source/android-lib/local.properties
 source/android-lib/build
 source/android-lib/.externalNativeBuild
 
+# CMake build directory
+build*