diff --git a/hosts/configuration_desktop.nix b/hosts/configuration_desktop.nix
index 7a6e29f..287121c 100644
--- a/hosts/configuration_desktop.nix
+++ b/hosts/configuration_desktop.nix
@@ -190,6 +190,7 @@
   nixpkgs.config.allowUnfree = true;        # Allow proprietary software.
   nixpkgs.config.permittedInsecurePackages = [
     "olm-3.2.16"
+    "mbedtls-2.28.10"
   ];
 
   system = {                                # NixOS settings