diff --git a/csharp/.gitignore b/csharp/.gitignore
index 4e1cd4a5..533ef745 100644
--- a/csharp/.gitignore
+++ b/csharp/.gitignore
@@ -30,6 +30,11 @@ bld/
 # MSTest test Results
 [Tt]est[Rr]esult*/
 [Bb]uild[Ll]og.*
+csharp/tests/Facebook.Yoga/NUnit-[0-9\.]+/
+csharp/tests/Facebook.Yoga/YogaTest.dll
+csharp/tests/Facebook.Yoga/YogaTest.dll.mdb
+csharp/tests/Facebook.Yoga/libyoga.dylib
+csharp/tests/Facebook.Yoga/libyoga.dylib.dSYM/
 
 # NUNIT
 *.VisualState.xml
@@ -262,4 +267,4 @@ paket-files/
 
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
-*.pyc
\ No newline at end of file
+*.pyc
diff --git a/csharp/.hgignore b/csharp/.hgignore
index 4e1cd4a5..4dd1c600 100644
--- a/csharp/.hgignore
+++ b/csharp/.hgignore
@@ -34,6 +34,11 @@ bld/
 # NUNIT
 *.VisualState.xml
 TestResult.xml
+csharp/tests/Facebook.Yoga/NUnit-[0-9\.]+/
+csharp/tests/Facebook.Yoga/YogaTest.dll
+csharp/tests/Facebook.Yoga/YogaTest.dll.mdb
+csharp/tests/Facebook.Yoga/libyoga.dylib
+csharp/tests/Facebook.Yoga/libyoga.dylib.dSYM/
 
 # Build Results of an ATL Project
 [Dd]ebugPS/
@@ -262,4 +267,4 @@ paket-files/
 
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
-*.pyc
\ No newline at end of file
+*.pyc