diff --git a/src/main/scala/io/archivesunleashed/spark/rdd/RecordRDD.scala b/src/main/scala/io/archivesunleashed/spark/rdd/RecordRDD.scala
index c179d7d6..20e27857 100644
--- a/src/main/scala/io/archivesunleashed/spark/rdd/RecordRDD.scala
+++ b/src/main/scala/io/archivesunleashed/spark/rdd/RecordRDD.scala
@@ -73,8 +73,8 @@ object RecordRDD extends java.io.Serializable {
       rdd.filter(r => mimeTypes.contains(r.getMimeType))
     }
 
-    def keepDate(date: String, component: DateComponent = DateComponent.YYYYMMDD) = {
-      rdd.filter(r => ExtractDate(r.getCrawlDate, component) == date)
+    def keepDate(dates: List[String], component: DateComponent = DateComponent.YYYYMMDD) = {
+      rdd.filter(r => dates.contains(ExtractDate(r.getCrawlDate, component)))
     }
 
     def keepUrls(urls: Set[String]) = {
diff --git a/src/test/scala/io/archivesunleashed/spark/ArcTest.scala b/src/test/scala/io/archivesunleashed/spark/ArcTest.scala
index 2ff87922..1046d32c 100644
--- a/src/test/scala/io/archivesunleashed/spark/ArcTest.scala
+++ b/src/test/scala/io/archivesunleashed/spark/ArcTest.scala
@@ -45,12 +45,12 @@ class ArcTest extends FunSuite with BeforeAndAfter {
 
   test("filter date") {
     val four = RecordLoader.loadArchives(arcPath, sc, keepValidPages = false)
-      .keepDate("200804", DateComponent.YYYYMM)
+      .keepDate(List("200804","200805"), DateComponent.YYYYMM)
       .map(r => r.getCrawlDate)
       .collect()
 
     val five = RecordLoader.loadArchives(arcPath, sc, keepValidPages = false)
-      .keepDate("200805", DateComponent.YYYYMM)
+      .keepDate(List("200805","200807"), DateComponent.YYYYMM)
       .map(r => r.getCrawlDate)
       .collect()
 
diff --git a/src/test/scala/io/archivesunleashed/spark/rdd/RecordRDDTest.scala b/src/test/scala/io/archivesunleashed/spark/rdd/RecordRDDTest.scala
index f74f8b58..462e5bcd 100644
--- a/src/test/scala/io/archivesunleashed/spark/rdd/RecordRDDTest.scala
+++ b/src/test/scala/io/archivesunleashed/spark/rdd/RecordRDDTest.scala
@@ -62,7 +62,7 @@ class RecordRDDTest extends FunSuite with BeforeAndAfter {
     val r = base
       .filter (x => ExtractDate(x.getCrawlDate, component) == "2008")
       .map ( mp => mp.getUrl).take(3)
-    val r2 = base.keepDate("2008", component)
+    val r2 = base.keepDate(List("2008"), component)
       .map ( mp => mp.getUrl).take(3)
     assert (r2.sameElements(r)) }