diff --git a/src/clojure/monger/operators.clj b/src/clojure/monger/operators.clj
index 505b9dd..a4311af 100644
--- a/src/clojure/monger/operators.clj
+++ b/src/clojure/monger/operators.clj
@@ -80,10 +80,16 @@
 ;;   (mgcol/find-maps "languages" { :tags { $nin [ "functional" ] } } )
 (defoperator $nin)
 
+;; $eq is "equals" comparator
+;;
+;; EXAMPLES:
+;;   (monger.collection/find "libraries" { :language { $eq "Clojure" }})
+(defoperator $eq)
+
 ;; $ne is "non-equals" comparator
 ;;
 ;; EXAMPLES:
-;;   (monger.collection/find "libraries" {$ne { :language "Clojure" }})
+;;   (monger.collection/find "libraries" { :language { $ne "Clojure" }})
 (defoperator $ne)
 
 ;; $elemMatch checks if an element in an array matches the specified expression
@@ -96,6 +102,13 @@
 (defoperator $regex)
 (defoperator $options)
 
+;; Matches documents that satisfy a JavaScript expression.
+;;
+;; EXAMPLES:
+;;
+;;   (monger.collection/find "people" { $where "this.placeOfBirth === this.address.city" })
+(defoperator $where)
+
 ;;
 ;; LOGIC OPERATORS
 ;;
@@ -275,9 +288,18 @@
 (defoperator $ifNull)
 (defoperator $cond)
 
+;; Geospatial
 (defoperator $geoWithin)
 (defoperator $geoIntersects)
 (defoperator $near)
+(defoperator $nearSphere)
+(defoperator $geometry)
+(defoperator $maxDistance)
+(defoperator $minDistance)
+(defoperator $center)
+(defoperator $centerSphere)
+(defoperator $box)
+(defoperator $polygon)
 
 (defoperator $slice)
 
@@ -292,3 +314,9 @@
 ;; EXAMPLES:
 ;;   (mgcol/update coll { :_id oid } { $currentDate { :lastModified true } })
 (defoperator $currentDate)
+
+;; Isolates intermediate multi-document updates from other clients.
+;;
+;; EXAMPLES:
+;;   (mgcol/update "libraries" { :language "Clojure", $isolated 1 } { $inc { :popularity 1 } } {:multi true})
+(defoperator $isolated)
diff --git a/test/monger/test/query_operators_test.clj b/test/monger/test/query_operators_test.clj
index bb09997..80ec631 100644
--- a/test/monger/test/query_operators_test.clj
+++ b/test/monger/test/query_operators_test.clj
@@ -3,10 +3,28 @@
             [monger.collection :as mc]
             [monger.js         :as js]
             [clojure.test :refer :all]
-            [monger.operators :refer :all]))
+            [clojure.set :refer [difference]]
+            [monger.operators :refer :all])
+  (:import [com.mongodb QueryOperators]))
 
 ;; (use-fixtures :each purge-people purge-docs purge-things purge-libraries)
 
+(deftest every-query-operator-is-defined
+  (let [driver-query-operators (->> (.getDeclaredFields QueryOperators) (map #(.get % nil)) set)
+        monger-query-operators (->> (ns-publics 'monger.operators) (map (comp name first)) set)
+        ; $within is deprecated and replaced by $geoWithin since v2.4.
+        ; $uniqueDocs is deprecated since v2.6.
+        deprecated-query-operators #{"$within" "$uniqueDocs"}
+        ; Query modifier operators that are deprecated in the mongo shell since v3.2
+        deprecated-meta-operators #{"$comment" "$explain" "$hint" "$maxScan"
+                                    "$maxTimeMS" "$max" "$min" "$orderby"
+                                    "$returnKey" "$showDiskLoc" "$snapshot" "$query"}
+        undefined-non-deprecated-operators (difference driver-query-operators
+                                                       deprecated-query-operators
+                                                       deprecated-meta-operators
+                                                       monger-query-operators)]
+    (is (= #{} undefined-non-deprecated-operators))))
+
 (let [conn (mg/connect)
       db   (mg/get-db conn "monger-test")]
   (defn purge-collections
@@ -36,17 +54,29 @@
            2 {:users {$lte 5}}
            1 {:users {$gt 10 $lt 150}})))
 
+  ;;
+  ;; $eq
+  ;;
+
+  (deftest find-with-eq-operator
+    (let [collection "libraries"]
+      (mc/insert-batch db collection [{:language "Ruby"    :name "mongoid"  :users 1 :displayName nil}
+                                      {:language "Clojure" :name "langohr"  :users 5}
+                                      {:language "Clojure" :name "incanter" :users 15}
+                                      {:language "Scala"   :name "akka"     :users 150}])
+      (is (= 2 (.count (mc/find db collection {:language {$eq "Clojure"}}))))))
+
   ;;
   ;; $ne
   ;;
 
-  (deftest find-with-and-or-operators
+  (deftest find-with-ne-operator
     (let [collection "libraries"]
       (mc/insert-batch db collection [{:language "Ruby"    :name "mongoid"  :users 1}
                                       {:language "Clojure" :name "langohr"  :users 5}
                                       {:language "Clojure" :name "incanter" :users 15}
                                       {:language "Scala"   :name "akka"     :users 150}])
-      (is (= 2 (.count (mc/find db collection {$ne {:language "Clojure"}}))))))
+      (is (= 2 (.count (mc/find db collection {:language {$ne "Clojure"}}))))))
 
 
   ;;
@@ -107,4 +137,10 @@
            {:language {$regex "clo.*" $options "i"}} 2
            {:name     {$regex "aK.*" $options "i"}} 1
            {:language {$regex ".*by"}} 1
-           {:language {$regex ".*ala.*"}} 1))))
+           {:language {$regex ".*ala.*"}} 1)))
+
+  (deftest find-with-js-expression
+    (let [collection "people"]
+      (mc/insert-batch db collection [{:name "Bob" :placeOfBirth "New York" :address {:city "New York"}}
+                                      {:name "Alice" :placeOfBirth "New York" :address {:city "Los Angeles"}}])
+      (is (= 1 (.count (mc/find db collection {$where "this.placeOfBirth === this.address.city"})))))))