diff --git a/plugin/src/software/aws/toolkits/eclipse/amazonq/lsp/manager/DefaultLspManager.java b/plugin/src/software/aws/toolkits/eclipse/amazonq/lsp/manager/DefaultLspManager.java
index 33fd05a5..2821976c 100644
--- a/plugin/src/software/aws/toolkits/eclipse/amazonq/lsp/manager/DefaultLspManager.java
+++ b/plugin/src/software/aws/toolkits/eclipse/amazonq/lsp/manager/DefaultLspManager.java
@@ -14,6 +14,12 @@
 import java.util.HashSet;
 import java.util.Optional;
 
+import org.eclipse.swt.widgets.Display;
+import software.aws.toolkits.eclipse.amazonq.util.Constants;
+import software.aws.toolkits.eclipse.amazonq.util.PersistentToolkitNotification;
+import org.apache.maven.artifact.versioning.ArtifactVersion;
+import org.eclipse.mylyn.commons.ui.dialogs.AbstractNotificationPopup;
+
 import software.aws.toolkits.eclipse.amazonq.exception.AmazonQPluginException;
 import software.aws.toolkits.eclipse.amazonq.lsp.manager.fetcher.ArtifactUtils;
 import software.aws.toolkits.eclipse.amazonq.lsp.manager.fetcher.LspFetcher;
@@ -83,6 +89,14 @@ private LspInstallResult fetchLspInstallation() {
         }
         Manifest manifest = fetchManifest();
 
+        if (manifest.isManifestDeprecated() && manifest.manifestSchemaVersion() != null) {
+            try {
+                showDeprecatedManifestNotification(manifest.manifestSchemaVersion());
+            } catch (Exception e) {
+                Activator.getLogger().error("Failed to show deprecated manifest notification", e);
+            }
+        }
+
         var platform = platformOverride != null ? platformOverride : PluginUtils.getPlatform();
         var architecture = architectureOverride != null ? architectureOverride : PluginUtils.getArchitecture();
 
@@ -239,6 +253,33 @@ private static void makeExecutable(final Path filePath) throws IOException {
         Files.setPosixFilePermissions(filePath, permissions);
     }
 
+    private static void showDeprecatedManifestNotification(final String version) {
+        ArtifactVersion schemaVersion = ArtifactUtils.parseVersion(version);
+        ArtifactVersion storedValue = Optional.ofNullable(Activator.getPluginStore().get(Constants.MANIFEST_DEPRECATED_NOTIFICATION_KEY))
+                .map(ArtifactUtils::parseVersion)
+                .orElse(null);
+
+        if (storedValue == null || remoteVersionIsGreater(schemaVersion, storedValue)) {
+            Display.getDefault().asyncExec(() -> {
+                AbstractNotificationPopup notification = new PersistentToolkitNotification(Display.getCurrent(),
+                        Constants.MANIFEST_DEPRECATED_NOTIFICATION_TITLE,
+                        Constants.MANIFEST_DEPRECATED_NOTIFICATION_BODY,
+                        (selected) -> {
+                            if (selected) {
+                                Activator.getPluginStore().put(Constants.MANIFEST_DEPRECATED_NOTIFICATION_KEY, schemaVersion.toString());
+                            } else {
+                                Activator.getPluginStore().remove(Constants.MANIFEST_DEPRECATED_NOTIFICATION_KEY);
+                            }
+                        });
+                notification.open();
+            });
+        }
+    }
+
+    private static boolean remoteVersionIsGreater(final ArtifactVersion remote, final ArtifactVersion storedValue) {
+        return remote.compareTo(storedValue) > 0;
+    }
+
     public static class Builder {
         private String manifestUrl;
         private Path workingDirectory;
diff --git a/plugin/src/software/aws/toolkits/eclipse/amazonq/util/Constants.java b/plugin/src/software/aws/toolkits/eclipse/amazonq/util/Constants.java
index fa290cea..550200a0 100644
--- a/plugin/src/software/aws/toolkits/eclipse/amazonq/util/Constants.java
+++ b/plugin/src/software/aws/toolkits/eclipse/amazonq/util/Constants.java
@@ -18,11 +18,15 @@ private Constants() {
     public static final String DO_NOT_SHOW_UPDATE_KEY = "doNotShowUpdate";
     public static final String PLUGIN_UPDATE_NOTIFICATION_TITLE = "Amazon Q Update Available";
     public static final String PLUGIN_UPDATE_NOTIFICATION_BODY = "Amazon Q plugin version %s is available."
-            + "Please update to receive the latest features and bug fixes.";
+            + " Please update to receive the latest features and bug fixes.";
     public static final String LSP_CW_OPT_OUT_KEY = "shareCodeWhispererContentWithAWS";
     public static final String LSP_CODE_REFERENCES_OPT_OUT_KEY = "includeSuggestionsWithCodeReferences";
     public static final String IDE_CUSTOMIZATION_NOTIFICATION_TITLE = "Amazon Q Customization";
     public static final String IDE_CUSTOMIZATION_NOTIFICATION_BODY_TEMPLATE = "Amazon Q inline suggestions are now coming from the %s";
+    public static final String MANIFEST_DEPRECATED_NOTIFICATION_KEY = "doNotShowDeprecatedManifest";
+    public static final String MANIFEST_DEPRECATED_NOTIFICATION_TITLE = "Update Amazon Q Extension";
+    public static final String MANIFEST_DEPRECATED_NOTIFICATION_BODY = "This version of the plugin"
+            + " will no longer receive updates to Amazon Q Language authoring features";
     public static final String DEFAULT_Q_FOUNDATION_DISPLAY_NAME = "Amazon Q foundation (Default)";
     public static final String LOGIN_TYPE_KEY = "LOGIN_TYPE";
     public static final String LOGIN_IDC_PARAMS_KEY = "IDC_PARAMS";
diff --git a/plugin/src/software/aws/toolkits/eclipse/amazonq/util/UpdateUtils.java b/plugin/src/software/aws/toolkits/eclipse/amazonq/util/UpdateUtils.java
index 1f7b9cee..979afeab 100644
--- a/plugin/src/software/aws/toolkits/eclipse/amazonq/util/UpdateUtils.java
+++ b/plugin/src/software/aws/toolkits/eclipse/amazonq/util/UpdateUtils.java
@@ -12,6 +12,7 @@
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
 import java.time.Duration;
+import java.util.Optional;
 
 import org.apache.maven.artifact.versioning.ArtifactVersion;
 import org.eclipse.mylyn.commons.ui.dialogs.AbstractNotificationPopup;
@@ -36,7 +37,9 @@ public static UpdateUtils getInstance() {
     }
 
     private UpdateUtils() {
-        mostRecentNotificationVersion = Activator.getPluginStore().getObject(Constants.DO_NOT_SHOW_UPDATE_KEY, ArtifactVersion.class);
+        mostRecentNotificationVersion = Optional.ofNullable(Activator.getPluginStore().get(Constants.DO_NOT_SHOW_UPDATE_KEY))
+                .map(ArtifactUtils::parseVersion)
+                .orElse(null);
         String localString = PluginClientMetadata.getInstance().getPluginVersion();
         localVersion = ArtifactUtils.parseVersion(localString.substring(0, localString.lastIndexOf(".")));
     }
@@ -108,7 +111,7 @@ private void showNotification() {
                     String.format(Constants.PLUGIN_UPDATE_NOTIFICATION_BODY, remoteVersion.toString()),
                     (selected) -> {
                         if (selected) {
-                            Activator.getPluginStore().putObject(Constants.DO_NOT_SHOW_UPDATE_KEY, remoteVersion);
+                            Activator.getPluginStore().put(Constants.DO_NOT_SHOW_UPDATE_KEY, remoteVersion.toString());
                         } else {
                             Activator.getPluginStore().remove(Constants.DO_NOT_SHOW_UPDATE_KEY);
                         }