diff --git a/haikudepotserver-core/src/main/java/org/haiku/haikudepotserver/pkg/job/PkgDumpExportJobRunner.java b/haikudepotserver-core/src/main/java/org/haiku/haikudepotserver/pkg/job/PkgDumpExportJobRunner.java
index 34c906ad..21015577 100644
--- a/haikudepotserver-core/src/main/java/org/haiku/haikudepotserver/pkg/job/PkgDumpExportJobRunner.java
+++ b/haikudepotserver-core/src/main/java/org/haiku/haikudepotserver/pkg/job/PkgDumpExportJobRunner.java
@@ -42,10 +42,7 @@
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.UncheckedIOException;
-import java.util.Collection;
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.stream.Collectors;
 import java.util.zip.GZIPOutputStream;
 
@@ -219,6 +216,7 @@ private DumpExportPkg createDumpPkg(
         Preconditions.checkArgument(null != pkgVersionsUnderCommonPkg && !pkgVersionsUnderCommonPkg.isEmpty());
 
         Pkg pkg = pkgVersionsUnderCommonPkg.getFirst().getPkg(); // any will do to get the pkg.
+        PkgUserRatingAggregate userRatingAggregate = pkg.getPkgUserRatingAggregate(repositorySource.getRepository()).orElse(null);
 
         DumpExportPkg dumpExportPkg = new DumpExportPkg();
         dumpExportPkg.setCreateTimestamp(pkg.getCreateTimestamp().getTime());
@@ -227,10 +225,12 @@ private DumpExportPkg createDumpPkg(
         dumpExportPkg.setHasChangelog(pkg.getPkgSupplement().getPkgChangelog().isPresent());
         dumpExportPkg.setProminenceOrdering(pkg.tryGetPkgProminence(repositorySource.getRepository())
                 .map((p) -> p.getProminence().getOrdering()).map(Number::longValue).orElse(null));
-        dumpExportPkg.setDerivedRating(
-                pkg.getPkgUserRatingAggregate(repositorySource.getRepository())
-                        .map((v) -> v.getDerivedRating().doubleValue()).orElse(null));
-
+        dumpExportPkg.setDerivedRating(Optional.ofNullable(userRatingAggregate)
+                .map((v) -> v.getDerivedRating().doubleValue())
+                .orElse(null));
+        dumpExportPkg.setDerivedRatingSampleSize(Optional.ofNullable(userRatingAggregate)
+                .map((v) -> v.getDerivedRatingSampleSize().longValue())
+                .orElse(0L));
         dumpExportPkg.setPkgCategories(
                 pkg.getPkgSupplement().getPkgPkgCategories().stream().map((ppc) -> {
                     DumpExportPkgCategory dumpExportPkgCategory = new DumpExportPkgCategory();
diff --git a/haikudepotserver-core/src/main/resources/schema/dumpexportpkg.json b/haikudepotserver-core/src/main/resources/schema/dumpexportpkg.json
index 7dc224df..156df125 100644
--- a/haikudepotserver-core/src/main/resources/schema/dumpexportpkg.json
+++ b/haikudepotserver-core/src/main/resources/schema/dumpexportpkg.json
@@ -20,6 +20,10 @@
     "derivedRating": {
       "type": "number"
     },
+    "derivedRatingSampleSize": {
+      "description": "This is the number of user ratings that were used to create the derived rating. It may be zero if there are no user ratings.",
+      "type": "integer"
+    },
     "hasChangelog": {
       "type": "boolean"
     },