diff --git a/project/project-info.conf b/project/project-info.conf
index 268dde4b92..2b0c38d147 100644
--- a/project/project-info.conf
+++ b/project/project-info.conf
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
+
 project-info {
   version: "current"
   scaladoc: "https://pekko.apache.org/api/pekko/"${project-info.version}"/org/apache/pekko/"
diff --git a/scripts/link-validator.conf b/scripts/link-validator.conf
index 62e004b534..70dbcba93f 100644
--- a/scripts/link-validator.conf
+++ b/scripts/link-validator.conf
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: Apache-2.0
+
 // config for https://github.com/ennru/site-link-validator/
 site-link-validator {
   root-dir = "docs/target/paradox/site/main/"