diff --git a/delta_string.go b/delta_string.go
new file mode 100644
index 0000000..53e02bd
--- /dev/null
+++ b/delta_string.go
@@ -0,0 +1,33 @@
+// Code generated by "stringer -type Delta -trimprefix Delta -tags static"; DO NOT EDIT.
+
+package git
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[DeltaUnmodified-0]
+	_ = x[DeltaAdded-1]
+	_ = x[DeltaDeleted-2]
+	_ = x[DeltaModified-3]
+	_ = x[DeltaRenamed-4]
+	_ = x[DeltaCopied-5]
+	_ = x[DeltaIgnored-6]
+	_ = x[DeltaUntracked-7]
+	_ = x[DeltaTypeChange-8]
+	_ = x[DeltaUnreadable-9]
+	_ = x[DeltaConflicted-10]
+}
+
+const _Delta_name = "UnmodifiedAddedDeletedModifiedRenamedCopiedIgnoredUntrackedTypeChangeUnreadableConflicted"
+
+var _Delta_index = [...]uint8{0, 10, 15, 22, 30, 37, 43, 50, 59, 69, 79, 89}
+
+func (i Delta) String() string {
+	if i < 0 || i >= Delta(len(_Delta_index)-1) {
+		return "Delta(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _Delta_name[_Delta_index[i]:_Delta_index[i+1]]
+}
diff --git a/diff.go b/diff.go
index a5d1a61..ed2949c 100644
--- a/diff.go
+++ b/diff.go
@@ -39,6 +39,8 @@ const (
 	DeltaConflicted Delta = C.GIT_DELTA_CONFLICTED
 )
 
+//go:generate stringer -type Delta -trimprefix Delta -tags static
+
 type DiffLineType int
 
 const (
@@ -54,6 +56,8 @@ const (
 	DiffLineBinary  DiffLineType = C.GIT_DIFF_LINE_BINARY
 )
 
+//go:generate stringer -type DiffLineType -trimprefix DiffLine -tags static
+
 type DiffFile struct {
 	Path  string
 	Oid   *Oid
diff --git a/difflinetype_string.go b/difflinetype_string.go
new file mode 100644
index 0000000..3c1ad58
--- /dev/null
+++ b/difflinetype_string.go
@@ -0,0 +1,56 @@
+// Code generated by "stringer -type DiffLineType -trimprefix DiffLine -tags static"; DO NOT EDIT.
+
+package git
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[DiffLineContext-32]
+	_ = x[DiffLineAddition-43]
+	_ = x[DiffLineDeletion-45]
+	_ = x[DiffLineContextEOFNL-61]
+	_ = x[DiffLineAddEOFNL-62]
+	_ = x[DiffLineDelEOFNL-60]
+	_ = x[DiffLineFileHdr-70]
+	_ = x[DiffLineHunkHdr-72]
+	_ = x[DiffLineBinary-66]
+}
+
+const (
+	_DiffLineType_name_0 = "Context"
+	_DiffLineType_name_1 = "Addition"
+	_DiffLineType_name_2 = "Deletion"
+	_DiffLineType_name_3 = "DelEOFNLContextEOFNLAddEOFNL"
+	_DiffLineType_name_4 = "Binary"
+	_DiffLineType_name_5 = "FileHdr"
+	_DiffLineType_name_6 = "HunkHdr"
+)
+
+var (
+	_DiffLineType_index_3 = [...]uint8{0, 8, 20, 28}
+)
+
+func (i DiffLineType) String() string {
+	switch {
+	case i == 32:
+		return _DiffLineType_name_0
+	case i == 43:
+		return _DiffLineType_name_1
+	case i == 45:
+		return _DiffLineType_name_2
+	case 60 <= i && i <= 62:
+		i -= 60
+		return _DiffLineType_name_3[_DiffLineType_index_3[i]:_DiffLineType_index_3[i+1]]
+	case i == 66:
+		return _DiffLineType_name_4
+	case i == 70:
+		return _DiffLineType_name_5
+	case i == 72:
+		return _DiffLineType_name_6
+	default:
+		return "DiffLineType(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+}