Gemfile in ff-ruby-server-sdk-1.1.4 vs Gemfile in ff-ruby-server-sdk-1.2.0

@@ -7,22 +7,22 @@
 gem "rake", "~> 13.0"
 gem "minitest", "~> 5.0"
 gem "standard", "~> 1.3"
 
 # Caching support:
-gem "rufus-scheduler"
-gem "libcache"
-gem "jwt"
-gem "moneta"
+gem "rufus-scheduler", "~> 3.8"
+gem "libcache", "0.4.2"
+gem "jwt", "~> 2.3"
+gem "moneta", "~> 1.4"
 
 # SSE support:
-gem "rest-client"
+gem "rest-client", "~> 2.1"
 
 # Concurrency support:
-gem "concurrent-ruby", "1.1.10", require: "concurrent"
+gem "concurrent-ruby", "~> 1.1", require: "concurrent"
 
 # Evaluator dependencies:
-gem "murmurhash3"
+gem "murmurhash3", "~> 0.1.6"
 
 gem "typhoeus"
 
 group :test do
   gem 'simplecov', '~> 0.21.2'