diff --git a/mm-optimistic_locking.gemspec b/mm-optimistic_locking.gemspec
index 12fcf32..f00a7cd 100644
--- a/mm-optimistic_locking.gemspec
+++ b/mm-optimistic_locking.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name        = "mm-optimistic_locking"
-  s.version     = "3.0.0"
+  s.version     = "3.0.1"
   s.authors     = ["Andy Lindeman"]
   s.email       = ["andy@highgroove.com"]
   s.homepage    = "http://github.com/highgroove/mm-optimistic_locking"
@@ -33,7 +33,7 @@ Gem::Specification.new do |s|
   # Mongo driver version locking to keep support for MongoDB < 3.6
   s.add_dependency 'mongo', "~> 2.16.0"
 
-  s.add_dependency 'mongo_mapper', "~> 0.15.0"
+  s.add_dependency 'mongo_mapper', "~> 0.15"
   s.add_dependency 'activesupport', '~> 6.0'
 
   s.add_development_dependency 'bundler'