diff --git a/services/hedgedoc-hacc.nix b/services/hedgedoc-hacc.nix
index 087e5d7..2c05b1c 100644
--- a/services/hedgedoc-hacc.nix
+++ b/services/hedgedoc-hacc.nix
@@ -43,7 +43,11 @@
           allowFreeURL = true;
           allowGravatar = false;
           allowOrigin = [ "localhost" "pad.hacc.space" "fff-muc.de" ];
-          dbURL = "postgres://codimd:codimd@localhost:5432/codimd";
+          db = {
+            host = "/run/postgresql";
+            dialect = "postgres";
+            database = "codimd";
+          };
           defaultPermission = "limited";
           domain  = "pad.hacc.space";
           host = "0.0.0.0";
diff --git a/services/hedgedoc-i4f.nix b/services/hedgedoc-i4f.nix
index b904cb4..1b6ed18 100644
--- a/services/hedgedoc-i4f.nix
+++ b/services/hedgedoc-i4f.nix
@@ -43,7 +43,11 @@
           allowFreeURL = true;
           allowGravatar = false;
           allowOrigin = [ "localhost" "pad.infra4future.de" "fff-muc.de" ];
-          dbURL = "postgres://hedgedoc:hedgedoc@localhost:5432/hedgedoc";
+          db = {
+            host = "/run/postgresql";
+            dialect = "postgres";
+            database = "hedgedoc";
+          };
           defaultPermission = "freely";
           domain  = "pad.infra4future.de";
           host = "0.0.0.0";