diff --git a/README.md b/README.md
index ab58c8f..0fca172 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,4 @@
 
 [Documentation](https://github.com/camicroscope/orthanc-indexer/wiki/Plugin-internals)
 
-Orthanc indexer plugin fork with caMicroscope patches
+Orthanc indexer plugin fork with caMicroscope patches. GPLv3.0 licensed (c) caMicroscope. (The original plugin is also GPLv3.0. "src/sources/camic_md5.h" is originally Boost-licensed v1.0)