diff --git a/pkgs/servers/sql/postgresql/ext/rum.nix b/pkgs/servers/sql/postgresql/ext/rum.nix
new file mode 100644
index 000000000000..ce7dcbd7a48d
--- /dev/null
+++ b/pkgs/servers/sql/postgresql/ext/rum.nix
@@ -0,0 +1,31 @@
+{ lib, stdenv, fetchFromGitHub, postgresql }:
+
+stdenv.mkDerivation rec {
+  pname = "rum";
+  version = "1.3.9";
+
+  src = fetchFromGitHub {
+    owner = "postgrespro";
+    repo = "rum";
+    rev = version;
+    sha256 = "sha256-xdCj9hzBg7VtAIHpIFpeeaK6U4aRrCsoQrPKdABSl+Y=";
+  };
+
+  buildInputs = [ postgresql ];
+
+  makeFlags = [ "USE_PGXS=1" ];
+
+  installPhase = ''
+    install -D -t $out/lib *.so
+    install -D -t $out/share/postgresql/extension *.control
+    install -D -t $out/share/postgresql/extension *.sql
+  '';
+
+  meta = with lib; {
+    description = "Full text search index method for PostgreSQL";
+    homepage = "https://github.com/postgrespro/rum";
+    license = licenses.postgresql;
+    platforms = postgresql.meta.platforms;
+    maintainers = with maintainers; [ DeeUnderscore ];
+  };
+}
diff --git a/pkgs/servers/sql/postgresql/packages.nix b/pkgs/servers/sql/postgresql/packages.nix
index f3df8a99ca22..fec106f32acd 100644
--- a/pkgs/servers/sql/postgresql/packages.nix
+++ b/pkgs/servers/sql/postgresql/packages.nix
@@ -61,4 +61,6 @@ self: super: {
     pg_safeupdate = super.callPackage ./ext/pg_safeupdate.nix { };
 
     repmgr = super.callPackage ./ext/repmgr.nix { };
+
+    rum = super.callPackage ./ext/rum.nix { };
 }