diff --git a/src/flatland/ordered/map.clj b/src/flatland/ordered/map.clj
index 25962cc..5c70fdf 100644
--- a/src/flatland/ordered/map.clj
+++ b/src/flatland/ordered/map.clj
@@ -26,8 +26,8 @@
 
 (declare transient-ordered-map)
 
-(deftype OrderedMap [^IPersistentMap backing-map
-                     ^IPersistentVector order]
+(deftype OrderedMap [^clojure.lang.IPersistentMap backing-map
+                     ^clojure.lang.IPersistentVector order]
 
   ;; tagging interfaces
   MapEquivalence
diff --git a/src/flatland/ordered/set.clj b/src/flatland/ordered/set.clj
index 0868bd0..0f823a8 100644
--- a/src/flatland/ordered/set.clj
+++ b/src/flatland/ordered/set.clj
@@ -16,8 +16,8 @@
       (fn old-hasheq-ordered-set [^Seqable s]
         (reduce + (map hash (.seq s))))))
 
-(deftype OrderedSet [^IPersistentMap k->i
-                     ^IPersistentVector i->k]
+(deftype OrderedSet [^clojure.lang.IPersistentMap k->i
+                     ^clojure.lang.IPersistentVector i->k]
   IPersistentSet
   (disjoin [this k]
     (if-let [i (.valAt k->i k)]