diff --git a/zirgen/compiler/r1cs/test/r1csfile.cpp b/zirgen/compiler/r1cs/test/r1csfile.cpp
index 10638b08..57596f93 100644
--- a/zirgen/compiler/r1cs/test/r1csfile.cpp
+++ b/zirgen/compiler/r1cs/test/r1csfile.cpp
@@ -1,6 +1,16 @@
-// Copyright (c) 2024 RISC Zero, Inc.
+// Copyright 2024 RISC Zero, Inc.
 //
-// All rights reserved.
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 
 #include "zirgen/compiler/r1cs/r1csfile.h"