diff --git a/pkgs/servers/dendrite/default.nix b/pkgs/servers/dendrite/default.nix
index 4faa08142cf5..935955e7bc44 100644
--- a/pkgs/servers/dendrite/default.nix
+++ b/pkgs/servers/dendrite/default.nix
@@ -1,4 +1,4 @@
-{ lib, buildGoModule, fetchFromGitHub
+{ lib, buildGoModule, fetchFromGitHub, fetchpatch
 , nixosTests, postgresql, postgresqlTestHook }:
 
 buildGoModule rec {
@@ -12,6 +12,14 @@ buildGoModule rec {
     hash = "sha256-2DqEfTXD3W6MxfBb6aHaKH+zpxLc2tHaGuWGQuncySo=";
   };
 
+  patches = [
+    # Fix SQLite db lockup
+    (fetchpatch {
+      url = "https://github.com/matrix-org/dendrite/commit/c08c7405dbe9d88c1364f6f1f2466db5045506cc.patch";
+      hash = "sha256-gTF9jK5Ihfe1v49gPCK68BLeiUZa2Syo+7D9r62iEXQ=";
+    })
+  ];
+
   vendorHash = "sha256-dc0zpKh7J+fi2b5GD/0BQ120UXbBvJLUF74RmYMSOMw=";
 
   subPackages = [