diff --git a/core/src/main/java/hudson/PluginWrapper.java b/core/src/main/java/hudson/PluginWrapper.java
index 32c67e771d..0442248c2d 100644
--- a/core/src/main/java/hudson/PluginWrapper.java
+++ b/core/src/main/java/hudson/PluginWrapper.java
@@ -1303,9 +1303,9 @@ public class PluginWrapper implements Comparable<PluginWrapper>, ModelObject {
     }
 
     @Restricted(NoExternalUse.class)
-    public Set<UpdateSite.Deprecation> getDeprecations() {
+    public List<UpdateSite.Deprecation> getDeprecations() {
         /* Would be much nicer to go through getInfoFromAllSites but that only works for currently published plugins */
-        Set<UpdateSite.Deprecation> deprecations = new HashSet<>();
+        List<UpdateSite.Deprecation> deprecations = new ArrayList<>();
         for (UpdateSite site : Jenkins.get().getUpdateCenter().getSites()) {
             for (Map.Entry<String, UpdateSite.Deprecation> entry : site.getData().getDeprecations().entrySet()) {
                 if (entry.getKey().equals(this.shortName)) {
diff --git a/core/src/main/resources/hudson/PluginManager/installed.jelly b/core/src/main/resources/hudson/PluginManager/installed.jelly
index e8b169de09..c911933422 100644
--- a/core/src/main/resources/hudson/PluginManager/installed.jelly
+++ b/core/src/main/resources/hudson/PluginManager/installed.jelly
@@ -134,6 +134,7 @@ THE SOFTWARE.
                     </j:if>
                     <j:if test="${p.isDeprecated()}">
                       <div class="alert alert-warning">
+                        <!-- figure out a way how to present deprecations by multiple update sites instead of just the first one -->
                         ${%deprecationWarning(p.getDeprecations().get(0).url)}
                       </div>
                     </j:if>
diff --git a/test/src/test/java/hudson/PluginManagerTest.java b/test/src/test/java/hudson/PluginManagerTest.java
index 41d842d755..684f0ef55c 100644
--- a/test/src/test/java/hudson/PluginManagerTest.java
+++ b/test/src/test/java/hudson/PluginManagerTest.java
@@ -645,10 +645,9 @@ public class PluginManagerTest {
         final PluginWrapper iconShim = pm.getPlugin("icon-shim");
         Objects.requireNonNull(iconShim);
         assertTrue(iconShim.isDeprecated());
-        Set<UpdateSite.Deprecation> deprecations = iconShim.getDeprecations();
+        List<UpdateSite.Deprecation> deprecations = iconShim.getDeprecations();
         assertEquals(1, deprecations.size());
-        List<UpdateSite.Deprecation> deprecationList = new ArrayList<>(deprecations);
-        assertEquals("https://jenkins.io/deprecations/icon-shim/", deprecationList.get(0).url);
+        assertEquals("https://jenkins.io/deprecations/icon-shim/", deprecations.get(0).url);
         assertEquals("https://wiki.jenkins-ci.org/display/JENKINS/Icon+Shim+Plugin", iconShim.getInfo().wiki);
 
         final PluginWrapper tokenMacro = pm.getPlugin("token-macro");
@@ -656,16 +655,14 @@ public class PluginManagerTest {
         assertTrue(tokenMacro.isDeprecated());
         deprecations = tokenMacro.getDeprecations();
         assertEquals(1, deprecations.size());
-        deprecationList = new ArrayList<>(deprecations);
-        assertEquals("https://wiki.jenkins-ci.org/display/JENKINS/Token+Macro+Plugin", deprecationList.get(0).url);
+        assertEquals("https://wiki.jenkins-ci.org/display/JENKINS/Token+Macro+Plugin", deprecations.get(0).url);
 
         final PluginWrapper variant = pm.getPlugin("variant");
         Objects.requireNonNull(variant);
         assertTrue(variant.isDeprecated());
         deprecations = variant.getDeprecations();
         assertEquals(1, deprecations.size());
-        deprecationList = new ArrayList<>(deprecations);
-        assertEquals("https://jenkins.io/deprecations/variant/", deprecationList.get(0).url);
+        assertEquals("https://jenkins.io/deprecations/variant/", deprecations.get(0).url);
         assertNull(variant.getInfo());
     }
 }