diff --git a/src/post_modules/CritBit/.gitignore b/src/post_modules/CritBit/.gitignore
index 3c4d1ab9e1acf44dedc5048cf4ae9163cc50b51d..14afa284d9484877d61f043f77c0d24a4738c88a 100644
--- a/src/post_modules/CritBit/.gitignore
+++ b/src/post_modules/CritBit/.gitignore
@@ -7,6 +7,7 @@
 /dependencies
 /floattree.c
 /inttree.c
+/stringtree.c
 /make_variables
 /propagated_variables
 /stamp-h