diff --git a/TwinCAT3.gitignore b/TwinCAT3.gitignore
index 7bd6f87505..1ee3818829 100644
--- a/TwinCAT3.gitignore
+++ b/TwinCAT3.gitignore
@@ -21,5 +21,11 @@ LineIDs.dbg
 LineIDs.dbg.bak
 _Boot/
 _CompileInfo/
-_Libraries/
-_ModuleInstall/
\ No newline at end of file
+_ModuleInstall/
+
+# Exclude all libraries
+/**/_Libraries/*/
+
+# To include a specific library directory (i.e. third party/custom libs), 
+# use pattern `!/**/_Libraries/<directory name>/` i.e. `!/**/_Libraries/www.tcunit.org/`
+# 
\ No newline at end of file