diff --git a/modules/base.nix b/modules/base.nix
index 2b4e2da..63d6fcb 100644
--- a/modules/base.nix
+++ b/modules/base.nix
@@ -9,9 +9,11 @@
     autoOptimiseStore = true;
     binaryCaches = [
       "https://dump-dvb.cachix.org"
+      "https://nix-serve.hq.c3d2.de"
     ];
     binaryCachePublicKeys = [
       "dump-dvb.cachix.org-1:+Dq7gqpQG4YlLA2X3xJsG1v3BrlUGGpVtUKWk0dTyUU="
+      "nix-serve.hq.c3d2.de:KZRGGnwOYzys6pxgM8jlur36RmkJQ/y8y62e52fj1ps="
     ];
   };