diff --git a/hosts/c3d2-web/default.nix b/hosts/c3d2-web/default.nix
index b3bd4dd3..81b78c47 100644
--- a/hosts/c3d2-web/default.nix
+++ b/hosts/c3d2-web/default.nix
@@ -50,6 +50,21 @@ in
           # Mastodon
           "~ ^/.well-known/webfinger".return = "301 https://c3d2.social/.well-known/webfinger?resource=acct%3ac3d2%40c3d2.social";
 
+          # Matrix
+          "~ ^/.well-known/matrix/server" = {
+            return = "200 '{\"m.server\": \"matrix.c3d2.de:443\"}'";
+            extraConfig = ''
+              add_header Content-Type application/json;
+            '';
+          };
+          "~ ^/.well-known/matrix/client" = {
+            return = "200 '{\"m.homeserver\": {\"base_url\": \"https://matrix.c3d2.de\"}}'";
+            extraConfig = ''
+              add_header "Content-Type" application/json;
+              add_header "Access-Control-Allow-Origin" *;
+            '';
+          };
+
           # SpaceAPI
           "/status.png".proxyPass = "http://[${hostRegistry.spaceapi.ip6}]:3000/status.png";
           "/spaceapi.json".proxyPass = "http://[${hostRegistry.spaceapi.ip6}]:3000/spaceapi.json";