diff --git a/ignore/src/types.rs b/ignore/src/types.rs
index e70f44b7..de2256ab 100644
--- a/ignore/src/types.rs
+++ b/ignore/src/types.rs
@@ -195,6 +195,7 @@ const DEFAULT_TYPES: &'static [(&'static str, &'static [&'static str])] = &[
     ("msbuild", &[
         "*.csproj", "*.fsproj", "*.vcxproj", "*.proj", "*.props", "*.targets"
     ]),
+    ("nb", &["*.ipynb", "*.jpynb"]),
     ("nim", &["*.nim"]),
     ("nix", &["*.nix"]),
     ("objc", &["*.h", "*.m"]),