diff --git a/src/main/java/com/omertron/themoviedbapi/model/discover/Discover.java b/src/main/java/com/omertron/themoviedbapi/model/discover/Discover.java
index 711c4e1d6..44253d218 100644
--- a/src/main/java/com/omertron/themoviedbapi/model/discover/Discover.java
+++ b/src/main/java/com/omertron/themoviedbapi/model/discover/Discover.java
@@ -137,6 +137,33 @@ public class Discover {
         return this;
     }
 
+    /**
+     * The primary minimum release to include.
+     * <p>
+     * Expected format is YYYY-MM-DD.
+     *
+     * @param primaryReleaseDateGte
+     * @return
+     */
+    public Discover primaryReleaseDateGte(String primaryReleaseDateGte) {
+        params.add(Param.PRIMARY_RELEASE_DATE_GTE, primaryReleaseDateGte);
+        return this;
+    }
+
+    /**
+     * The primary maximum release to include.
+     * <p>
+     * Expected format is YYYY-MM-DD.
+     *
+     * @param primaryReleaseDateLte
+     * @return
+     */
+    public Discover primaryReleaseDateLte(String primaryReleaseDateLte) {
+        params.add(Param.PRIMARY_RELEASE_DATE_LTE, primaryReleaseDateLte);
+        return this;
+    }
+
+
     /**
      * Only include movies that are equal to, or have a vote count higher than this value
      *
diff --git a/src/main/java/com/omertron/themoviedbapi/tools/Param.java b/src/main/java/com/omertron/themoviedbapi/tools/Param.java
index fe59b0d54..c2b6a2f01 100644
--- a/src/main/java/com/omertron/themoviedbapi/tools/Param.java
+++ b/src/main/java/com/omertron/themoviedbapi/tools/Param.java
@@ -56,6 +56,8 @@ public enum Param {
     PAGE("page="),
     PASSWORD("password="),
     PRIMARY_RELEASE_YEAR("primary_release_year="),
+    PRIMARY_RELEASE_DATE_GTE("primary_release_date.gte="),
+    PRIMARY_RELEASE_DATE_LTE("primary_release_date.lte="),
     QUERY("query="),
     RELEASE_DATE_GTE("release_date.gte="),
     RELEASE_DATE_LTE("release_date.lte="),