diff --git a/.gitignore b/.gitignore
index 3e776860e1e9289e7d835930d80b8b374fcf03bd..5e4a722d950b1c3a27ae72f890f1f518bc8e8fb0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,6 +56,9 @@ classic/5.0/src/config.h
 src/AbstractObjects/CMakeFiles
 src/AbstractObjects/Makefile
 src/AbstractObjects/cmake_install.cmake
+src/Algebra/CMakeFiles
+src/Algebra/Makefile
+src/Algebra/cmake_install.cmake
 src/Algorithms/CMakeFiles
 src/Algorithms/Makefile
 src/Algorithms/cmake_install.cmake