diff --git a/.gitignore b/.gitignore
index 3e531ae0bd..0e8f9c0fc5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,3 +63,4 @@ libsecp256k1.pc
 /CMakeUserPresets.json
 # Default CMake build directory.
 /build
+.python-version