diff --git a/CHANGELOG.md b/CHANGELOG.md
index 608d21f..e32f0c9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [0.2.7] - 2017-10-16
+### Added
+- remaining unit tests that were incomplete, thanks everyone who participated!
+- added parsing of where `doesnthave()` condition.
+
 ## [0.2.6] - 2017-10-12
 ### Added
 - orderBy clause to cache key. Thanks @RobMKR for the PR!
diff --git a/src/CachedBuilder.php b/src/CachedBuilder.php
index 6e6de17..f632ef9 100644
--- a/src/CachedBuilder.php
+++ b/src/CachedBuilder.php
@@ -81,8 +81,8 @@ protected function getWhereClauses(array $wheres = []) : string
         }
 
         return $wheres->reduce(function ($carry, $where) {
-            if (in_array($where['type'], ['Exists', 'Nested'])) {
-                return $this->getWhereClauses($where['query']->wheres);
+            if (in_array($where['type'], ['Exists', 'Nested', 'NotExists'])) {
+                return '_' . strtolower($where['type']) . $this->getWhereClauses($where['query']->wheres);
             }
 
             if ($where['type'] === 'Column') {
diff --git a/tests/Unit/CachedBuilderTest.php b/tests/Unit/CachedBuilderTest.php
index 0feba08..df37dae 100644
--- a/tests/Unit/CachedBuilderTest.php
+++ b/tests/Unit/CachedBuilderTest.php
@@ -504,34 +504,58 @@ public function testNestedRelationshipWhereClauseParsing()
 
     public function testExistsRelationshipWhereClauseParsing()
     {
+        $authors = (new Author)->whereHas('books')
+            ->get();
 
-        $authors = collect([(new Author)->whereHas('books')->first()]);
-
-        $key = 'genealabslaravelmodelcachingtestsfixturesauthor_and_authors.id_=_books.author_id-first';
+        $key = 'genealabslaravelmodelcachingtestsfixturesauthor_exists_and_authors.id_=_books.author_id';
         $tags = ['genealabslaravelmodelcachingtestsfixturesauthor'];
 
-        $cachedResults = collect([cache()->tags($tags)->get($key)]);
+        $cachedResults = cache()->tags($tags)->get($key);
+        $liveResults = (new UncachedAuthor)->whereHas('books')
+            ->get();
 
-        $liveResults = collect([(new UncachedAuthor)
-            ->whereHas('books')->first()]);
+        $this->assertEmpty($authors->diffAssoc($cachedResults));
+        $this->assertEmpty($liveResults->diffAssoc($cachedResults));
+    }
 
-        $this->assertTrue($authors->diffAssoc($cachedResults)->isEmpty());
-        $this->assertTrue($liveResults->diffAssoc($cachedResults)->isEmpty());        
+    public function testDoesntHaveWhereClaseParsing()
+    {
+        $authors = (new Author)
+            ->doesntHave('books')
+            ->get();
+
+        $key = 'genealabslaravelmodelcachingtestsfixturesauthor_notexists_and_authors.id_=_books.author_id';
+        $tags = ['genealabslaravelmodelcachingtestsfixturesauthor'];
+
+        $cachedResults = cache()
+            ->tags($tags)
+            ->get($key);
+        $liveResults = (new UncachedAuthor)
+            ->doesntHave('books')
+            ->get();
 
+        $this->assertEmpty($authors->diffAssoc($cachedResults));
+        $this->assertEmpty($liveResults->diffAssoc($cachedResults));
     }
 
     public function testColumnsRelationshipWhereClauseParsing()
     {
-        $author = (new Author)->orderBy('name')->first();
-
-        $authors = collect([(new Author)->where('name', '=', $author->name)->first()]);
-
-        $key = 'genealabslaravelmodelcachingtestsfixturesauthor-name_' . $author->name . '-first';
+        $author = (new Author)
+            ->orderBy('name')
+            ->first();
+        $authors = (new Author)
+            ->where('name', '=', $author->name)
+            ->get();
+        $key = 'genealabslaravelmodelcachingtestsfixturesauthor-name_' .
+            $author->name;
         $tags = ['genealabslaravelmodelcachingtestsfixturesauthor'];
 
-        $cachedResults = collect([cache()->tags($tags)->get($key)]);
-
-        $liveResults = collect([(new UncachedAuthor)->where('name', '=', $author->name)->first()]);
+        $cachedResults = cache()
+            ->tags($tags)
+            ->get($key);
+        $liveResults = (new UncachedAuthor)
+            ->where('name', '=', $author->name)
+            ->get();
 
         $this->assertEmpty($authors->diffAssoc($cachedResults));
         $this->assertEmpty($liveResults->diffAssoc($cachedResults));