diff --git a/src/main/java/org/rundeck/api/QueryParameterBuilder.java b/src/main/java/org/rundeck/api/QueryParameterBuilder.java
index 6fd0126..23db9bb 100644
--- a/src/main/java/org/rundeck/api/QueryParameterBuilder.java
+++ b/src/main/java/org/rundeck/api/QueryParameterBuilder.java
@@ -36,6 +36,9 @@ import java.util.*;
 abstract class QueryParameterBuilder implements ApiPathBuilder.BuildsParameters {
     public static final String W3C_DATE_FORMAT = "yyyy-MM-dd'T'HH:mm:ss'Z'";
     static final SimpleDateFormat format = new SimpleDateFormat(W3C_DATE_FORMAT);
+    static {
+        format.setTimeZone(TimeZone.getTimeZone("GMT"));
+    }
 
     /**
      * Add a value to the builder for a given key