diff --git a/src/middleware/backtrace.lisp b/src/middleware/backtrace.lisp
index 738ea18..a5e7c97 100644
--- a/src/middleware/backtrace.lisp
+++ b/src/middleware/backtrace.lisp
@@ -2,7 +2,8 @@
 (defpackage lack.middleware.backtrace
   (:use :cl)
   (:import-from :uiop/image
-                :print-condition-backtrace))
+                :print-condition-backtrace)
+  (:export :*lack-middleware-backtrace*))
 (in-package :lack.middleware.backtrace)
 
 (defvar *lack-middleware-backtrace*
diff --git a/src/middleware/mount.lisp b/src/middleware/mount.lisp
index 870855d..1298637 100644
--- a/src/middleware/mount.lisp
+++ b/src/middleware/mount.lisp
@@ -1,6 +1,7 @@
 (in-package :cl-user)
 (defpackage lack.middleware.mount
-  (:use :cl))
+  (:use :cl)
+  (:export :*lack-middleware-mount*))
 (in-package :lack.middleware.mount)
 
 (defvar *lack-middleware-mount*
diff --git a/src/middleware/session.lisp b/src/middleware/session.lisp
index e8a988b..820cb36 100644
--- a/src/middleware/session.lisp
+++ b/src/middleware/session.lisp
@@ -13,7 +13,8 @@
   (:import-from :lack.session.store.memory
                 :make-memory-store)
   (:import-from :lack.session.state.cookie
-                :make-cookie-state))
+                :make-cookie-state)
+  (:export :*lack-middleware-session*))
 (in-package :lack.middleware.session)
 
 (defvar *lack-middleware-session*