diff --git a/.gitignore b/.gitignore
index bc4b3d7df21..a2c194fb5cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -652,6 +652,7 @@ icu4c/source/tools/ctestfw/x64
 icu4c/source/tools/ctestfw/x86
 icu4c/source/tools/escapesrc/*.d
 icu4c/source/tools/escapesrc/Makefile
+icu4c/source/tools/escapesrc/output-*.cpp
 icu4c/source/tools/genbrk/*.d
 icu4c/source/tools/genbrk/*.o
 icu4c/source/tools/genbrk/*.pdb