diff --git a/pkgs/tools/graphics/gmic/default.nix b/pkgs/tools/graphics/gmic/default.nix
index 78652f26ab11..cb460124f2f1 100644
--- a/pkgs/tools/graphics/gmic/default.nix
+++ b/pkgs/tools/graphics/gmic/default.nix
@@ -110,7 +110,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     description = "Open and full-featured framework for image processing";
     homepage = "https://gmic.eu/";
-    license = licenses.cecill20;
+    license = licenses.cecill21;
     platforms = platforms.unix;
   };
 }