diff --git a/TwoTerm.xcodeproj/project.pbxproj b/TwoTerm.xcodeproj/project.pbxproj
index 0cdd32f..d4e65f4 100644
--- a/TwoTerm.xcodeproj/project.pbxproj
+++ b/TwoTerm.xcodeproj/project.pbxproj
@@ -45,6 +45,7 @@
 		B67B3CE612B6FA040033AE07 /* a2-charset-80.png in Resources */ = {isa = PBXBuildFile; fileRef = B67B3CE412B6FA040033AE07 /* a2-charset-80.png */; };
 		B6801BD912EB549300B22E9E /* vt100-charset.png in Resources */ = {isa = PBXBuildFile; fileRef = B6801BD812EB549300B22E9E /* vt100-charset.png */; };
 		B68E632A12FF909D00EAFF5F /* ExampleView.m in Sources */ = {isa = PBXBuildFile; fileRef = B68E632912FF909C00EAFF5F /* ExampleView.m */; };
+		B69E32A920221C9E0086D7B1 /* ChildMonitor.mm in Sources */ = {isa = PBXBuildFile; fileRef = B69E32A820221C9E0086D7B1 /* ChildMonitor.mm */; };
 		B6ACA2AD1E614E38000E774B /* VT52.mm in Sources */ = {isa = PBXBuildFile; fileRef = B612F46312DD5DF1005D1B77 /* VT52.mm */; };
 		B6ACA2AF1E635CEC000E774B /* vt52-charset.png in Resources */ = {isa = PBXBuildFile; fileRef = B6ACA2AE1E635CEC000E774B /* vt52-charset.png */; };
 		B6C704EF15CCC64100CC0401 /* titlebar-center@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = B6C704EC15CCC64100CC0401 /* titlebar-center@2x.png */; };
@@ -160,6 +161,8 @@
 		B6801BD812EB549300B22E9E /* vt100-charset.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "vt100-charset.png"; sourceTree = "<group>"; };
 		B68E632812FF909C00EAFF5F /* ExampleView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ExampleView.h; sourceTree = "<group>"; };
 		B68E632912FF909C00EAFF5F /* ExampleView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = ExampleView.m; sourceTree = "<group>"; };
+		B69E32A820221C9E0086D7B1 /* ChildMonitor.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = ChildMonitor.mm; sourceTree = "<group>"; };
+		B69E32AA20221CCA0086D7B1 /* ChildMonitor.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ChildMonitor.h; sourceTree = "<group>"; };
 		B6ACA2AB1E5C8BEC000E774B /* GNOConsole.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = GNOConsole.mm; sourceTree = "<group>"; };
 		B6ACA2AE1E635CEC000E774B /* vt52-charset.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "vt52-charset.png"; sourceTree = "<group>"; };
 		B6C173901D31D2B80024E360 /* GSOSConsole.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = GSOSConsole.h; sourceTree = "<group>"; };
@@ -201,6 +204,8 @@
 				B6EBE2B411E0EA9100EA0458 /* CharacterGenerator.mm */,
 				B60EBDE111E90FC300C1974F /* ScanLineFilter.h */,
 				B60EBDE211E90FC300C1974F /* ScanLineFilter.m */,
+				B69E32A820221C9E0086D7B1 /* ChildMonitor.mm */,
+				B69E32AA20221CCA0086D7B1 /* ChildMonitor.h */,
 			);
 			name = Classes;
 			sourceTree = "<group>";
@@ -451,6 +456,7 @@
 				B675F4A91E561D20004B0D9C /* Apple80.mm.ragel in Sources */,
 				B675F4AC1E56A7F2004B0D9C /* GSOSConsole.mm.ragel in Sources */,
 				B6D1CD071E577E7D00C4A6BC /* PTSE.mm.ragel in Sources */,
+				B69E32A920221C9E0086D7B1 /* ChildMonitor.mm in Sources */,
 				B6407805201CE93500D3F2D1 /* GNOConsole.mm.ragel in Sources */,
 				8D11072D0486CEB800E47090 /* main.m in Sources */,
 				256AC3DA0F4B6AC300CF3369 /* TwoTermAppDelegate.mm in Sources */,