diff --git a/pkgs/servers/sql/postgresql/timescaledb/default.nix b/pkgs/servers/sql/postgresql/timescaledb/default.nix
index 07dcfb0b701..3c53054ba7d 100644
--- a/pkgs/servers/sql/postgresql/timescaledb/default.nix
+++ b/pkgs/servers/sql/postgresql/timescaledb/default.nix
@@ -46,6 +46,6 @@ stdenv.mkDerivation rec {
     homepage    = https://www.timescale.com/;
     maintainers = with maintainers; [ volth ];
     platforms   = platforms.linux;
-    license     = licenses.postgresql;
+    license     = licenses.asl20;
   };
 }