Gem updates, restrict pg gem until rails is updated

Gemfile

@@ -52,7 +52,7 @@ gem 'american_date'
 gem 'jbuilder'
 
 gem 'ffi'
-gem 'pg'
+gem "pg", "~> 0.18"
 gem 'therubyracer'
 gem 'oily_png'
 

Gemfile.lock

@@ -74,7 +74,7 @@ GEM
       sshkit (>= 1.6.1, != 1.7.0)
     american_date (1.1.1)
     arel (8.0.0)
-    autoprefixer-rails (7.2.4)
+    autoprefixer-rails (7.2.5)
       execjs
     backports (3.11.0)
     base32_pure (0.1.0)
@@ -83,7 +83,7 @@ GEM
       coderay (>= 1.0.0)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)
-    binding_of_caller (0.7.3)
+    binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
     bootstrap-sass (3.3.7)
       autoprefixer-rails (>= 5.2.1)
@@ -223,7 +223,7 @@ GEM
     faraday (0.13.1)
       multipart-post (>= 1.2, < 3)
     ffi (1.9.18)
-    font-awesome-rails (4.7.0.2)
+    font-awesome-rails (4.7.0.3)
       railties (>= 3.2, < 5.2)
     fuubar (2.3.1)
       rspec-core (~> 3.0)
@@ -254,10 +254,10 @@ GEM
     launchy (2.4.3)
       addressable (~> 2.3)
     libv8 (3.16.14.19)
-    lograge (0.7.1)
-      actionpack (>= 4, < 5.2)
-      activesupport (>= 4, < 5.2)
-      railties (>= 4, < 5.2)
+    lograge (0.9.0)
+      actionpack (>= 4)
+      activesupport (>= 4)
+      railties (>= 4)
       request_store (~> 1.0)
     logs_tf (0.0.4)
       faraday (~> 0.8)
@@ -283,8 +283,8 @@ GEM
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.1)
-    msgpack (1.2.0)
-    multi_json (1.12.2)
+    msgpack (1.2.2)
+    multi_json (1.13.1)
     multi_test (0.1.2)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
@@ -465,7 +465,7 @@ GEM
     trollop (2.1.2)
     tzinfo (1.2.4)
       thread_safe (~> 0.1)
-    uglifier (4.1.2)
+    uglifier (4.1.3)
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
@@ -550,7 +550,7 @@ DEPENDENCIES
   omniauth-openid
   omniauth-steam
   paypal-sdk-rest
-  pg
+  pg (~> 0.18)
   pry-nav
   puma
   rack-attack