diff --git a/conf/dendrite.yaml b/conf/dendrite.yaml
index c2a80c8..06de6b0 100644
--- a/conf/dendrite.yaml
+++ b/conf/dendrite.yaml
@@ -129,7 +129,7 @@ app_service_api:
     listen: http://localhost:7777 # Only used in polylith deployments
     connect: http://localhost:7777 # Only used in polylith deployments
   database:
-    connection_string: file:appservice.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 10
     max_idle_conns: 2
     conn_max_lifetime: -1
@@ -201,7 +201,7 @@ federation_api:
   external_api:
     listen: http://[::]:8072
   database:
-    connection_string: file:federationapi.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 10
     max_idle_conns: 2
     conn_max_lifetime: -1
@@ -242,7 +242,7 @@ key_server:
     listen: http://localhost:7779 # Only used in polylith deployments
     connect: http://localhost:7779 # Only used in polylith deployments
   database:
-    connection_string: file:keyserver.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 10
     max_idle_conns: 2
     conn_max_lifetime: -1
@@ -255,7 +255,7 @@ media_api:
   external_api:
     listen: http://[::]:8074
   database:
-    connection_string: file:mediaapi.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 5
     max_idle_conns: 2
     conn_max_lifetime: -1
@@ -294,7 +294,7 @@ mscs:
   # - msc2946    (Spaces Summary, see https://github.com/matrix-org/matrix-doc/pull/2946)
   mscs: []
   database:
-    connection_string: file:mscs.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 5
     max_idle_conns: 2
     conn_max_lifetime: -1
@@ -305,7 +305,7 @@ room_server:
     listen: http://localhost:7770 # Only used in polylith deployments
     connect: http://localhost:7770 # Only used in polylith deployments
   database:
-    connection_string: file:roomserver.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 10
     max_idle_conns: 2
     conn_max_lifetime: -1
@@ -318,7 +318,7 @@ sync_api:
   external_api:
     listen: http://[::]:8073
   database:
-    connection_string: file:syncapi.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 10
     max_idle_conns: 2
     conn_max_lifetime: -1
@@ -341,7 +341,7 @@ user_api:
     listen: http://localhost:7781 # Only used in polylith deployments
     connect: http://localhost:7781 # Only used in polylith deployments
   account_database:
-    connection_string: file:userapi_accounts.db
+    connection_string: postgres://__DB_USER__:__DB_PWD__@localhost/__DB_NAME__
     max_open_conns: 10
     max_idle_conns: 2
     conn_max_lifetime: -1