diff --git a/.gitignore b/.gitignore
index 6d7eb1c..c98b187 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,9 @@ naval_fate
 run_testcase
 run_testcase.exe
 
+# CMake build directories
+/*build*/
+
 # CMake temporary files
 CMakeCache.txt
 CMakeFiles