diff --git a/build.gradle b/build.gradle
index 2c0df82..9d1c903 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 plugins {
-    id 'org.springframework.boot' version '2.6.5'
+    id 'org.springframework.boot' version '2.6.6'
     id 'io.spring.dependency-management' version '1.0.11.RELEASE'
     id 'java'
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 00e33ed..aa991fc 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/installAndRun.sh b/installAndRun.sh
index f33e388..bc9bdf9 100755
--- a/installAndRun.sh
+++ b/installAndRun.sh
@@ -31,7 +31,7 @@ if [[ ! -f $inputDataFile ]]; then
   echo -e "\n\n"
 fi
 
-gradleVersion="7.4.1"
+gradleVersion="7.4.2"
 
 if [[ justInstall -eq 0 ]]; then
 
diff --git a/src/main/java/eu/openaire/urls_worker/models/Payload.java b/src/main/java/eu/openaire/urls_worker/models/Payload.java
index 4b618f6..e2095d8 100644
--- a/src/main/java/eu/openaire/urls_worker/models/Payload.java
+++ b/src/main/java/eu/openaire/urls_worker/models/Payload.java
@@ -17,7 +17,8 @@ import java.sql.Timestamp;
         "size",
         "hash",
         "location",
-        "provenance"
+        "provenance",
+        "datasourceId"
 })
 public class Payload {
 
@@ -48,9 +49,13 @@ public class Payload {
     @JsonProperty("provenance")
     private String provenance;  // "crawl:<PluginName>"
 
+    @JsonProperty("provenance")
+    private String datasourceId;  // "crawl:<PluginName>"
+
+
     public Payload() {}
 
-    public Payload(String id, String original_url, String actual_url, Timestamp timestamp_acquired, String mime_type, Long size, String hash, String location, String provenance) {
+    public Payload(String id, String original_url, String actual_url, Timestamp timestamp_acquired, String mime_type, Long size, String hash, String location, String provenance, String datasourceId) {
         this.id = id;
         this.original_url = original_url;
         this.actual_url = actual_url;
@@ -60,6 +65,7 @@ public class Payload {
         this.hash = hash;
         this.location = location;
         this.provenance = provenance;
+        this.datasourceId = datasourceId;
     }
 
     public String getId() {
@@ -134,18 +140,29 @@ public class Payload {
         this.provenance = provenance;
     }
 
+    public String getDatasourceId() {
+        return datasourceId;
+    }
+
+    public void setDatasourceId(String datasourceId) {
+        this.datasourceId = datasourceId;
+    }
+
+
     @Override
     public String toString() {
         return "Payload{" +
                 "id='" + id + '\'' +
                 ", original_url='" + original_url + '\'' +
                 ", actual_url='" + actual_url + '\'' +
-                ", timestamp_acquired='" + timestamp_acquired + '\'' +
+                ", timestamp_acquired=" + timestamp_acquired +
                 ", mime_type='" + mime_type + '\'' +
-                ", size='" + size + '\'' +
+                ", size=" + size +
                 ", hash='" + hash + '\'' +
                 ", location='" + location + '\'' +
                 ", provenance='" + provenance + '\'' +
+                ", datasourceId='" + datasourceId + '\'' +
                 '}';
     }
+
 }
diff --git a/src/main/java/eu/openaire/urls_worker/plugins/PublicationsRetrieverPlugin.java b/src/main/java/eu/openaire/urls_worker/plugins/PublicationsRetrieverPlugin.java
index bfb8fd8..63c9501 100644
--- a/src/main/java/eu/openaire/urls_worker/plugins/PublicationsRetrieverPlugin.java
+++ b/src/main/java/eu/openaire/urls_worker/plugins/PublicationsRetrieverPlugin.java
@@ -23,6 +23,7 @@ import java.nio.charset.StandardCharsets;
 import java.sql.Timestamp;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.List;
 import java.util.concurrent.Callable;
 import java.util.concurrent.Executors;
@@ -142,7 +143,7 @@ public class PublicationsRetrieverPlugin {
         if ( numFailedTasks > 0 )
             logger.warn(numFailedTasks + " tasks failed, from assignments_" + assignmentRequestCounter);
 
-        addUrlReportsToWorkerReport();
+        addUrlReportsToWorkerReport(assignments);
         callableTasks.clear(); // Reset the thread-tasks-list for the next batch.
 
         UrlUtils.docOrDatasetUrlsWithIDs.clear();   // This HashTable is useful only for a single assignments-batch.
@@ -150,8 +151,14 @@ public class PublicationsRetrieverPlugin {
     }
 
 
-    public static void addUrlReportsToWorkerReport()
+    public static void addUrlReportsToWorkerReport(Collection<Assignment> assignments)
     {
+        // Index the UrlIds with the DatasourceIds for quick-search later.
+        HashMap<String, String> urlIdsWithDatasourceIds = new HashMap<>(assignments.size());
+        for ( Assignment assignment : assignments ) {
+            urlIdsWithDatasourceIds.put(assignment.getId(), assignment.getDatasource().getId());
+        }
+
         Timestamp timestamp = new Timestamp(System.currentTimeMillis()); // Store it here, in order to have the same for all current records.
 
         for ( DataToBeLogged data : FileUtils.dataToBeLoggedList )
@@ -213,7 +220,10 @@ public class PublicationsRetrieverPlugin {
             if ( (hash != null) && (hash.equals("null")) )
                 hash = null;
 
-            Payload payload = new Payload(data.getUrlId(), data.getSourceUrl(), docOrDatasetUrl, timestamp, mimeType, size, hash, fileLocation, "crawl:PublicationsRetriever");
+            String urlId = data.getUrlId();
+            String datasourceId = urlIdsWithDatasourceIds.get(urlId);
+
+            Payload payload = new Payload(urlId, data.getSourceUrl(), docOrDatasetUrl, timestamp, mimeType, size, hash, fileLocation, "crawl:PublicationsRetriever", datasourceId);
             // TODO - If support is added for other doc-formats other than "pdf", then make sure the "mime_type" is correctly specified.
 
             AssignmentsHandler.urlReports.add(new UrlReport(status, payload, error));