diff --git a/parsons/mattermost.nix b/parsons/mattermost.nix
index 7c20c5c..eef0f60 100644
--- a/parsons/mattermost.nix
+++ b/parsons/mattermost.nix
@@ -164,6 +164,7 @@
           MetricsSettings.Enable = false;
           GuestAccountsSettings.Enable = false;
           FeatureFlags.CollapsedThreads = true;
+          SqlSettings.DriverName = "mysql";
         };
 
         # turn of the weirder parts of this module (which insist on passwords
@@ -184,28 +185,6 @@
         package = pkgs.mysql80;
         dataDir = "/persist/mysql";
       };
-
-      services.postgresql = {
-        enable = lib.mkForce true; # mattermost sets this to false. wtf.
-        package = pkgs.postgresql_15;
-        ensureDatabases = [ "mattermost" ];
-        ensureUsers = [ {
-          name = "mattermost";
-          ensureDBOwnership = true;
-        } ];
-
-        authentication = lib.mkForce ''
-          # Generated file; do not edit!
-          local all all              trust
-          host  mattermost mattermost ::1/128      trust
-        '';
-      };
-      services.postgresqlBackup = {
-        enable = true;
-        databases = [ "mattermost" ];
-        startAt = "*-*-* 23:45:00";
-        location = "/persist/backups/postgres";
-      };
     };
   };
 
diff --git a/secrets.yaml b/secrets.yaml
index f5234a7..75263e7 100644
--- a/secrets.yaml
+++ b/secrets.yaml
@@ -1,7 +1,7 @@
 hedgedoc-hacc:
     env: ENC[AES256_GCM,data:e2vSolxJNucya9QNs28gAVDBJQq5AJh7jS1nBh0UTkDnhNL8NPW1KTxcun4rM99EhiNZsz6Z9qHRMejmP4frQw==,iv:DqAGhGWYf/EpGnI79MxKmBlHMhK26zx50vXb1TbvESw=,tag:Xix499XAcAmxhNuGr2ApcA==,type:str]
 mattermost:
-    env: ENC[AES256_GCM,data:4GcV8UOYmVUjZoYc0Nq/vEWtxtYNV81zVTEyFnZIfY1k/Ar1MU+fn5A99JLIMc8U84/QupDU7TcneiN/wqPv2jYqGS7ixSNTk+x5uUPMarzKZ04ynav6FCWEvlSF0Sz4/5s/Pvp1Qi3zdv16ZVGUHbM8/wCcaZBkSS0ofwBTIXVsVYSRPFxLehtBgwjAnD46qS+YJmszmd7V5N/adWWF34vAdfLiO6Y7KDB3jnMLOPU6Drtw9L83AW6NuOtk8crZrI1dkTD/xUC07IvMhZpZVc9ktQJqIvlk/ADs5aIp/QYrjICdYvb8xC16oV7jC/7yzXzC/UuYbCvS5gnHGMK/CsBkmM9HXmQ6mWjrfuOJEkMHSefS7O8HyrNoNDSXq0ivCr6KJmwrz7NXNAE6a6xx9LMjs5DJ8H5fda1l5TGVAdA2tg==,iv:dG4cnEtUgUxw7zS2k15p+6//Bl19WquTfFIiz5Vi/0M=,tag:cMBU8CtFBBjfcfpO709Kpg==,type:str]
+    env: ENC[AES256_GCM,data:L9GBhCvdHUKlDQ1J3uvEqVziv9yCCISycexyTo/U0Hx8vPVk3TAEOk8zP23XAUsHNEE2L0ibzHBTVAMiXMmFkiuyxlmLqfRemZ3cm4eXMPP8Wks+5d9yFKLYAaQgjpFUEOX5k+FHvN3+ADs/zTBT7LRWIKtga4yr14VfXAzmde2TFZM30Fdoj24EBdgaCjuh4FC9GMmivT/PtCX5s87c3O48EM993llhINVtnYxCLItunBCax/PQX2duVrvYg8FA6ldH6rUOy1fPtWVR8Vs9loSsTnK2AkrRKOzqKxU+lkQENHIGrHWhcl2toPAgeE5on//9tMpZVwYwJrubvAa2luikVEdAnjSQh3Co4bVSECzQTqp6pkm4gzgwagn3rSdbR40=,iv:auCnnA6+35LTW7E/0AWWwjh6Jmq/Y57MjiBKI8aJb9U=,tag:/7fAqyG87CxekN/QVKrLsg==,type:str]
 tracktrain:
     env: ENC[AES256_GCM,data:W3+8qWomPgGJt5u50aAm9x/dilMpqKY11I2AdaIBTz5posc25ts0LB5S/Sxe1ROz4itpDK3QvjoFUTRhS39k4dwMr5lqXV8Ln4B+sPpvh7oBM8A5zydP8Jj1J1YqRt8++RTUmb4z41DIwb/yaZKMu6z0guXIu1yuYzcbCuk0xe/iOp6UUpfjOzzWTvxY54zY6kWcjHLiCSwD31Cd+MxMPfbUEkHt+0W+sBmYXGeEFI/6ULSB6FnGjNW6F9g=,iv:3ymah8HG+Yg6VYZZA/MRRjHDYvYJz01ezvhfQiftegg=,tag:trht+PRYfKgWJkg2wRwISQ==,type:str]
 vaultwarden:
@@ -100,8 +100,8 @@ sops:
             bndBTXJhQVE2OVlKeGNTbzJlL0duUzAKIWdesesYvBIN/m36fhzxq30+IT8qp/pF
             S6i7QqZF75y2BpEoupRCqNIAsHrouUE+U9ZQJZO8m9J591mWvbVJIw==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2024-05-08T11:06:26Z"
-    mac: ENC[AES256_GCM,data:H18GHY66eYI8BfJNd1ybzTgrPoq+lGnSp1f+65/+cOOndgyzo9/XwgToB3tMMyJFIXbQ0li9zYIb0TMldSYsaXI1AixPqRh8UXwM5x7OBZCi3DFA+SLKhslO88Lw3abZ9IEkZgrnNjeLKKXxgZwPHEpmlkOS38rDYTFCToK5JVI=,iv:TKaay3eFIDGr++8F500n45BISH6LnhWQ1+x18HiXZD8=,tag:Zecr/XH6NfP8tOj4T9Fmqg==,type:str]
+    lastmodified: "2024-05-08T12:29:13Z"
+    mac: ENC[AES256_GCM,data:Gt1UQy531A9YguKSWzgq2+EKATY2yqE7lCtG9+BYCCB2idMq6bNbKoLn5+kUTv/4y4P/4mgeTdMqdUDrF3nUTqpyyiE0U1I/B9z05iN1Xo5rnEOswX2TvT+br838vw4ueIk/4EmXlRyYRYJi/kTRtBcnYfDjbIYVE0JVkHutjmc=,iv:xsZAJlZCvGWoov1DRx4obt+OQeDMnU+OqCI3/1mzz5c=,tag:+MALy05C1hEUeODC0VcUEg==,type:str]
     pgp: []
     unencrypted_suffix: _unencrypted
     version: 3.8.1