diff --git a/Gemfile.lock b/Gemfile.lock
index dc17004..45cc8fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    factory_girl (4.8.0)
+    factory_girl (4.8.1)
       activesupport (>= 3.0.0)
 
 GEM
@@ -113,4 +113,4 @@ DEPENDENCIES
   yard
 
 BUNDLED WITH
-   1.14.6
+   1.15.4
diff --git a/NEWS b/NEWS
index 63bf613..1a700b1 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+4.8.1 (September 28, 2017)
+  Explicitly define `#destroyed?` within the `Stub` strategy to return `nil` instead of raising
+  Update various dependencies
+  Update internal test suite to use RSpec's mocking/stubbing instead of mocha
+
 4.8.0 (December 16, 2016)
   Improve documentation
   Add `FactoryGirl.generate_list` to be consistent with `build_list`/`create_list` and friends
diff --git a/gemfiles/3.2.gemfile.lock b/gemfiles/3.2.gemfile.lock
index 64f9bd3..3c04a81 100644
--- a/gemfiles/3.2.gemfile.lock
+++ b/gemfiles/3.2.gemfile.lock
@@ -18,7 +18,7 @@ GIT
 PATH
   remote: ../
   specs:
-    factory_girl (4.8.0)
+    factory_girl (4.8.1)
       activesupport (>= 3.0.0)
 
 GEM
diff --git a/gemfiles/4.0.gemfile.lock b/gemfiles/4.0.gemfile.lock
index ccef44d..29a2fdc 100644
--- a/gemfiles/4.0.gemfile.lock
+++ b/gemfiles/4.0.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../
   specs:
-    factory_girl (4.8.0)
+    factory_girl (4.8.1)
       activesupport (>= 3.0.0)
 
 GEM
diff --git a/gemfiles/4.1.gemfile.lock b/gemfiles/4.1.gemfile.lock
index dfe35da..dfd5060 100644
--- a/gemfiles/4.1.gemfile.lock
+++ b/gemfiles/4.1.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../
   specs:
-    factory_girl (4.8.0)
+    factory_girl (4.8.1)
       activesupport (>= 3.0.0)
 
 GEM
diff --git a/gemfiles/4.2.gemfile.lock b/gemfiles/4.2.gemfile.lock
index 20fb3e7..40f1d13 100644
--- a/gemfiles/4.2.gemfile.lock
+++ b/gemfiles/4.2.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../
   specs:
-    factory_girl (4.8.0)
+    factory_girl (4.8.1)
       activesupport (>= 3.0.0)
 
 GEM
diff --git a/gemfiles/5.0.gemfile.lock b/gemfiles/5.0.gemfile.lock
index 0f8cf8a..e0b11b9 100644
--- a/gemfiles/5.0.gemfile.lock
+++ b/gemfiles/5.0.gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: ../
   specs:
-    factory_girl (4.8.0)
+    factory_girl (4.8.1)
       activesupport (>= 3.0.0)
 
 GEM
diff --git a/lib/factory_girl/version.rb b/lib/factory_girl/version.rb
index 6c3700a..ff2ce5f 100644
--- a/lib/factory_girl/version.rb
+++ b/lib/factory_girl/version.rb
@@ -1,3 +1,3 @@
 module FactoryGirl
-  VERSION = '4.8.0'.freeze
+  VERSION = '4.8.1'.freeze
 end