diff --git a/java/kotlin_test.go b/java/kotlin_test.go
index 60ca1c4..530f7fe 100644
--- a/java/kotlin_test.go
+++ b/java/kotlin_test.go
@@ -22,6 +22,7 @@
 )
 
 func TestKotlin(t *testing.T) {
+	t.Parallel()
 	ctx, _ := testJava(t, `
 		java_library {
 			name: "foo",
@@ -84,6 +85,7 @@
 }
 
 func TestKapt(t *testing.T) {
+	t.Parallel()
 	ctx, _ := testJava(t, `
 		java_library {
 			name: "foo",
@@ -163,6 +165,7 @@
 }
 
 func TestKaptEncodeFlags(t *testing.T) {
+	t.Parallel()
 	// Compares the kaptEncodeFlags against the results of the example implementation at
 	// https://kotlinlang.org/docs/reference/kapt.html#apjavac-options-encoding
 	tests := []struct {