diff --git a/.versions b/.versions
index 57f726c..b0f487d 100644
--- a/.versions
+++ b/.versions
@@ -1,5 +1,5 @@
-aldeed:collection2@2.7.0
-aldeed:simple-schema@1.3.2
+aldeed:collection2@2.7.1
+aldeed:simple-schema@1.5.3
 babel-compiler@5.8.24_1
 babel-runtime@0.1.4
 base64@1.0.4
@@ -23,8 +23,9 @@ html-tools@1.0.5
 htmljs@1.0.5
 id-map@1.0.4
 jquery@1.11.4
-local-test:aldeed:collection2@2.7.0
+local-test:aldeed:collection2@2.7.1
 logging@1.0.8
+mdg:validation-error@0.2.0
 meteor@1.1.10
 minimongo@1.0.10
 mongo@1.1.3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 441eed3..61b579d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ A smart package for Meteor that extends Mongo.Collection to provide support for
 
 ## Change Log
 
+### 2.7.1
+
+* Fixed an issue where an accidental breaking change in SimpleSchema v1.4.0 caused `denyInsert` and `denyUpdate` to stop working. If using SimpleSchema v1.4.0 or higher, be sure to use Collection2 v2.7.1 or higher.
+* Fix upsert validation when `_id` is required in the schema
+* Throw a clearer error for when all keys are removed from the document or modifier during filter cleaning
+
 ### 2.7.0
 
 In preparation for splitting some features into separate packages, a `Collection2` object is now exported and emits a 'schema.attached' event whenever a schema is attached to a collection.