diff --git a/REUSE.toml b/REUSE.toml
index 6c9db4d..2ba6154 100644
--- a/REUSE.toml
+++ b/REUSE.toml
@@ -20,6 +20,7 @@ path = [
     "skus/open/keys/ca/README.md",
     "skus/open/keys/ca/dice_ca.conf",
     "skus/open/keys/owner/README.md",
+    "skus/open/signatures/**/*.*_sig",
     "doc/**",
 ]
 SPDX-FileCopyrightText = "lowRISC contributors (OpenTitan project)."