diff --git a/src/main/java/microsoft/exchange/webservices/data/util/TimeZoneUtils.java b/src/main/java/microsoft/exchange/webservices/data/util/TimeZoneUtils.java
index f0ab97d49..15f816e4d 100644
--- a/src/main/java/microsoft/exchange/webservices/data/util/TimeZoneUtils.java
+++ b/src/main/java/microsoft/exchange/webservices/data/util/TimeZoneUtils.java
@@ -465,6 +465,7 @@ public static Map<String, String> createOlsonTimeZoneToMsMap() {
     map.put("Etc/Zulu", "UTC");
     map.put("Europe/Amsterdam", "W. Europe Standard Time");
     map.put("Europe/Andorra", "W. Europe Standard Time");
+    map.put("Europe/Astrakhan", "Astrakhan Standard Time");
     map.put("Europe/Athens", "GTB Standard Time");
     map.put("Europe/Belfast", "GMT Standard Time");
     map.put("Europe/Belgrade", "Central Europe Standard Time");
@@ -485,6 +486,7 @@ public static Map<String, String> createOlsonTimeZoneToMsMap() {
     map.put("Europe/Jersey", "GMT Standard Time");
     map.put("Europe/Kaliningrad", "Kaliningrad Standard Time");
     map.put("Europe/Kiev", "FLE Standard Time");
+    map.put("Europe/Kirov", "Russian Standard Time");
     map.put("Europe/Lisbon", "GMT Standard Time");
     map.put("Europe/Ljubljana", "Central Europe Standard Time");
     map.put("Europe/London", "GMT Standard Time");
@@ -512,6 +514,7 @@ public static Map<String, String> createOlsonTimeZoneToMsMap() {
     map.put("Europe/Tallinn", "FLE Standard Time");
     map.put("Europe/Tirane", "Central Europe Standard Time");
     map.put("Europe/Tiraspol", "GTB Standard Time");
+    map.put("Europe/Ulyanovsk", "Astrakhan Standard Time");
     map.put("Europe/Uzhgorod", "FLE Standard Time");
     map.put("Europe/Vaduz", "W. Europe Standard Time");
     map.put("Europe/Vatican", "W. Europe Standard Time");