diff --git a/.gitignore b/.gitignore
index fd5204b5f64..98c4cb479a9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,9 @@
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
 
+# Orleans code-gen files
+orleans.codegen.cs
+
 # User-specific files
 *.suo
 *.user
@@ -138,6 +141,8 @@ publish/
 !**/packages/build/
 # If using the old MSBuild-Integrated Package Restore, uncomment this:
 #!**/packages/repositories.config
+# Auto-downloaded nuget.exe
+**/[Nn]u[Gg]et.exe
 
 # Windows Azure Build Output
 csx/