diff --git a/config/settings.yml b/config/settings.yml
index 04f69e649..043905fbb 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -123,7 +123,7 @@ auth-pw-hash:
 database:
   user:     "_env:PGUSER:uniworx"
   password: "_env:PGPASS:uniworx"
-  host:     "_env:PGHOST:localhost"
+  host:     "_env:PGHOST:host.docker.internal"
   port:     "_env:PGPORT:5432"
   # See config/test-settings.yml for an override during tests
   database: "_env:PGDATABASE:uniworx"
@@ -181,7 +181,7 @@ smtp:
     limit:   "_env:SMTPLIMIT:10"
 
 widget-memcached:
-  host:       "_env:WIDGET_MEMCACHED_HOST:localhost"
+  host:       "_env:WIDGET_MEMCACHED_HOST:host.docker.internal"
   port:       "_env:WIDGET_MEMCACHED_PORT:11211"
   auth:       []
   limit:      "_env:WIDGET_MEMCACHED_LIMIT:1024"
@@ -190,7 +190,7 @@ widget-memcached:
   expiration: "_env:WIDGET_MEMCACHED_EXPIRATION:3600"
   
 session-memcached:
-  host:       "_env:SESSION_MEMCACHED_HOST:localhost"
+  host:       "_env:SESSION_MEMCACHED_HOST:host.docker.internal"
   port:       "_env:SESSION_MEMCACHED_PORT:11211"
   auth:       []
   limit:      "_env:SESSION_MEMCACHED_LIMIT:1024"
@@ -200,7 +200,7 @@ session-memcached:
 
 # TODO: this one seems to be required!
 memcached:
-  host:       "_env:MEMCACHED_HOST:localhost"
+  host:       "_env:MEMCACHED_HOST:host.docker.internal"
   port:       "_env:MEMCACHED_PORT:11211"
   auth:       []
   limit:      "_env:MEMCACHED_LIMIT:1024"