diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index e5a87f3da7abe..da74e28dfbd37 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,9 @@
+*   Add missing time zone definitions for Russian Federation and sync them
+    with `zone.tab` file from tzdata version 2014j (latest).
+
+    *Andrey Novikov*
+
+
 ## Rails 4.1.9 (January 6, 2015) ##
 
 *   No changes.
diff --git a/activesupport/lib/active_support/values/time_zone.rb b/activesupport/lib/active_support/values/time_zone.rb
index 38f0d268f4f68..601babac21ca1 100644
--- a/activesupport/lib/active_support/values/time_zone.rb
+++ b/activesupport/lib/active_support/values/time_zone.rb
@@ -111,9 +111,11 @@ class TimeZone
       "Jerusalem"                    => "Asia/Jerusalem",
       "Harare"                       => "Africa/Harare",
       "Pretoria"                     => "Africa/Johannesburg",
+      "Kaliningrad"                  => "Europe/Kaliningrad",
       "Moscow"                       => "Europe/Moscow",
       "St. Petersburg"               => "Europe/Moscow",
-      "Volgograd"                    => "Europe/Moscow",
+      "Volgograd"                    => "Europe/Volgograd",
+      "Samara"                       => "Europe/Samara",
       "Kuwait"                       => "Asia/Kuwait",
       "Riyadh"                       => "Asia/Riyadh",
       "Nairobi"                      => "Africa/Nairobi",
@@ -170,6 +172,7 @@ class TimeZone
       "Guam"                         => "Pacific/Guam",
       "Port Moresby"                 => "Pacific/Port_Moresby",
       "Magadan"                      => "Asia/Magadan",
+      "Srednekolymsk"                => "Asia/Srednekolymsk",
       "Solomon Is."                  => "Pacific/Guadalcanal",
       "New Caledonia"                => "Pacific/Noumea",
       "Fiji"                         => "Pacific/Fiji",