diff --git a/diff.go b/diff.go
index 3cc1dc2..3088320 100644
--- a/diff.go
+++ b/diff.go
@@ -437,6 +437,8 @@ const (
 	DiffShowUnmodified       DiffOptionsFlag = C.GIT_DIFF_SHOW_UNMODIFIED
 	DiffPatience             DiffOptionsFlag = C.GIT_DIFF_PATIENCE
 	DiffMinimal              DiffOptionsFlag = C.GIT_DIFF_MINIMAL
+	DiffShowBinary           DiffOptionsFlag = C.GIT_DIFF_SHOW_BINARY
+	DiffIndentHeuristic      DiffOptionsFlag = C.GIT_DIFF_INDENT_HEURISTIC
 )
 
 type DiffNotifyCallback func(diffSoFar *Diff, deltaToAdd DiffDelta, matchedPathspec string) error