diff --git a/.gitignore b/.gitignore
index cae28210..fbc311d7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,8 +52,8 @@ libsecp256k1.pc
 
 ### CMake
 /CMakeUserPresets.json
-# Default CMake build directory.
-/build
+# CMake build directories.
+/*build*
 
 ### Python
 __pycache__/