diff --git a/Gemfile.lock b/Gemfile.lock
index 32f3bee..261535d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,19 +2,19 @@ PATH
   remote: .
   specs:
     fit4ruby (3.3.0)
-      bindata (= 2.3.0)
+      bindata (~> 2.4.8)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    bindata (2.3.0)
+    bindata (2.4.8)
     coderay (1.1.2)
     diff-lcs (1.3)
     method_source (0.9.2)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rake (0.9.6)
+    rake (12.3.3)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -37,7 +37,7 @@ DEPENDENCIES
   bundler (>= 1.6.4)
   fit4ruby!
   pry (>= 0.12)
-  rake (~> 12.0.0)
+  rake (~> 12.3.3)
   rspec (>= 3.8)
   yard (~> 0.9.20)
 
diff --git a/fit4ruby.gemspec b/fit4ruby.gemspec
index 87a93e0..7b5fdad 100644
--- a/fit4ruby.gemspec
+++ b/fit4ruby.gemspec
@@ -26,7 +26,7 @@ EOT
 
   spec.add_dependency('bindata', '~>2.4.8')
   spec.add_development_dependency('yard', '~>0.9.20')
-  spec.add_development_dependency('rake', '~>13.0.3')
+  spec.add_development_dependency('rake', '~>12.3.3')
   spec.add_development_dependency('bundler', '>=1.6.4')
   spec.add_development_dependency('rspec', '>=3.8')
   spec.add_development_dependency('pry', '>=0.12')