diff --git a/OKH-LOSH.ttl b/OKH-LOSH.ttl
index a8cf1867..b14ac3ca 100644
--- a/OKH-LOSH.ttl
+++ b/OKH-LOSH.ttl
@@ -19,6 +19,10 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+# Fixes, changes or suggestions to this file
+# can be issued at its source location:
+$ <https://github.com/OPEN-NEXT/OKH-LOSH/master/OKH-LOSH.ttl>
+
 # NOTE:
 # Regarding the use of `schema:domainIncludes`
 # and `schema:rangeIncludes` in this ontology:
diff --git a/OTRL.ttl b/OTRL.ttl
index 4255f5fe..9fc0ae6c 100644
--- a/OTRL.ttl
+++ b/OTRL.ttl
@@ -14,6 +14,10 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+# Fixes, changes or suggestions to this file
+# can be issued at its source location:
+$ <https://github.com/OPEN-NEXT/OKH-LOSH/master/OTRL.ttl>
+
 <>
   a owl:Ontology ;
   owl:versionInfo "1.0" ;