diff --git a/src/EloquentIdentityStore.php b/src/EloquentIdentityStore.php
new file mode 100644
index 0000000..abca964
--- /dev/null
+++ b/src/EloquentIdentityStore.php
@@ -0,0 +1,28 @@
+<?php namespace AdamWathan\EloquentOAuth;
+
+class EloquentIdentityStore implements IdentityStore
+{
+    public function getByProvider($provider, $providerUser)
+    {
+        return OAuthIdentity::where('provider', $provider)
+            ->where('provider_user_id', $providerUser->id)
+            ->first();
+    }
+
+    public function flush($user, $provider)
+    {
+        OAuthIdentity::where('user_id', $user->getKey())
+            ->where('provider', $provider)
+            ->delete();
+    }
+
+    public function store($identity)
+    {
+        $identity->save();
+    }
+
+    public function userExists($provider, $providerUser)
+    {
+        return (bool) $this->getByProvider($provider, $providerUser);
+    }
+}
diff --git a/src/IdentityStore.php b/src/IdentityStore.php
index 0e27d91..414965a 100644
--- a/src/IdentityStore.php
+++ b/src/IdentityStore.php
@@ -1,28 +1,9 @@
 <?php namespace AdamWathan\EloquentOAuth;
 
-class IdentityStore
+interface IdentityStore
 {
-    public function getByProvider($provider, $providerUser)
-    {
-        return OAuthIdentity::where('provider', $provider)
-            ->where('provider_user_id', $providerUser->id)
-            ->first();
-    }
-
-    public function flush($user, $provider)
-    {
-        OAuthIdentity::where('user_id', $user->getKey())
-            ->where('provider', $provider)
-            ->delete();
-    }
-
-    public function store($identity)
-    {
-        $identity->save();
-    }
-
-    public function userExists($provider, $providerUser)
-    {
-        return (bool) $this->getByProvider($provider, $providerUser);
-    }
+    public function getByProvider($provider, $providerUser);
+    public function flush($user, $provider);
+    public function store($identity);
+    public function userExists($provider, $providerUser);
 }
diff --git a/tests/IdentityStoreTest.php b/tests/IdentityStoreTest.php
index bc41ffc..952f48e 100644
--- a/tests/IdentityStoreTest.php
+++ b/tests/IdentityStoreTest.php
@@ -1,7 +1,7 @@
 <?php
 
 use AdamWathan\EloquentOAuth\OAuthIdentity;
-use AdamWathan\EloquentOAuth\IdentityStore;
+use AdamWathan\EloquentOAuth\EloquentIdentityStore;
 use Illuminate\Database\Eloquent\Model as Eloquent;
 use Mockery as M;
 use SocialNorm\User as UserDetails;
@@ -36,7 +36,7 @@ public function test_get_by_provider()
             'email' => 'john.doe@example.com',
             'avatar' => 'http://example.com/photos/john_doe.jpg',
         ));
-        $identities = new IdentityStore;
+        $identities = new EloquentIdentityStore;
         $identity = $identities->getByProvider('facebook', $details);
         $this->assertEquals(2, $identity->user_id);
         $this->assertEquals('facebook', $identity->provider);
@@ -66,7 +66,7 @@ public function test_get_by_provider_when_no_match()
             'email' => 'john.doe@example.com',
             'avatar' => 'http://example.com/photos/john_doe.jpg',
         ));
-        $identities = new IdentityStore;
+        $identities = new EloquentIdentityStore;
         $identity = $identities->getByProvider('facebook', $details);
         $this->assertNull($identity);
     }
@@ -88,7 +88,7 @@ public function test_flush()
 
         $this->assertEquals(1, OAuthIdentity::where('provider', 'facebook')->where('user_id', 2)->count());
 
-        $identities = new IdentityStore;
+        $identities = new EloquentIdentityStore;
         $user = M::mock();
         $user->shouldReceive('getKey')->andReturn(2);
         $identities->flush($user, 'facebook');
@@ -107,7 +107,7 @@ public function test_store()
 
         $this->assertEquals(0, OAuthIdentity::count());
 
-        $identities = new IdentityStore;
+        $identities = new EloquentIdentityStore;
         $identities->store($identity);
 
         $this->assertEquals(1, OAuthIdentity::count());
@@ -129,7 +129,7 @@ public function test_user_exists_returns_true_when_user_exists()
             'email' => 'john.doe@example.com',
             'avatar' => 'http://example.com/photos/john_doe.jpg',
         ));
-        $identities = new IdentityStore;
+        $identities = new EloquentIdentityStore;
         $this->assertTrue($identities->userExists('facebook', $details));
     }
 
@@ -149,7 +149,7 @@ public function test_user_exists_returns_false_when_user_doesnt_exist()
             'email' => 'john.doe@example.com',
             'avatar' => 'http://example.com/photos/john_doe.jpg',
         ));
-        $identities = new IdentityStore;
+        $identities = new EloquentIdentityStore;
         $this->assertFalse($identities->userExists('facebook', $details));
     }
 }