diff --git a/_service b/_service
index f98a73e..f791db1 100644
--- a/_service
+++ b/_service
@@ -3,7 +3,7 @@
     <param name="url">https://github.com/istio/istio</param>
     <param name="scm">git</param>
     <param name="exclude">.git</param>
-    <param name="revision">1.19.4</param>
+    <param name="revision">1.20.0</param>
     <param name="versionformat">@PARENT_TAG@</param>
     <param name="changesgenerate">enable</param>
   </service>
@@ -16,6 +16,6 @@
     <param name="compression">gz</param>
   </service>
   <service name="go_modules" mode="manual">
-    <param name="archive">istio-1.19.4.obscpio</param>
+    <param name="archive">istio-1.20.0.obscpio</param>
   </service>
 </services>
diff --git a/_servicedata b/_servicedata
index ab27113..7ffac61 100644
--- a/_servicedata
+++ b/_servicedata
@@ -1,4 +1,4 @@
 <servicedata>
 <service name="tar_scm">
                 <param name="url">https://github.com/istio/istio</param>
-              <param name="changesrevision">930b482af113506a9aac0f4c3c547aa4f81965bb</param></service></servicedata>
\ No newline at end of file
+              <param name="changesrevision">6869a6c2371e21c847d216065cf5c59863d01b4c</param></service></servicedata>
\ No newline at end of file
diff --git a/istio-1.19.4.obscpio b/istio-1.19.4.obscpio
deleted file mode 100644
index 0aef560..0000000
--- a/istio-1.19.4.obscpio
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8d5fda4c6da7a079378f45463b471f90ccc1b6699b4fca51220393a509209d35
-size 29625869
diff --git a/istio-1.20.0.obscpio b/istio-1.20.0.obscpio
new file mode 100644
index 0000000..4c13b4d
--- /dev/null
+++ b/istio-1.20.0.obscpio
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:47a99eaf8a510d4924f9d857e70141e4bce913b1740821f736df70685733bdf8
+size 30206477
diff --git a/istio.obsinfo b/istio.obsinfo
index d6af76b..2f03670 100644
--- a/istio.obsinfo
+++ b/istio.obsinfo
@@ -1,4 +1,4 @@
 name: istio
-version: 1.19.4
-mtime: 1699502946
-commit: 930b482af113506a9aac0f4c3c547aa4f81965bb
+version: 1.20.0
+mtime: 1699944808
+commit: 6869a6c2371e21c847d216065cf5c59863d01b4c
diff --git a/istioctl.changes b/istioctl.changes
index c92d7af..9e985cd 100644
--- a/istioctl.changes
+++ b/istioctl.changes
@@ -1,3 +1,53 @@
+-------------------------------------------------------------------
+Thu Nov 16 12:10:47 UTC 2023 - kastl@b1-systems.de
+
+- Update to version 1.20.0:
+  https://istio.io/latest/news/releases/1.20.x/announcing-1.20/
+  * Deprecation Notices
+    - There are no new deprecations in Istio 1.20.0.
+  * Istioctl
+    - Added a new istioctl dashboard proxy command, which can be
+      used to show the admin UI of different proxy pods, like
+      Envoy, Ztunnel, Waypoint.
+    - Added an output format option for the istioctl experimental
+      pre-check command. Valid options are log, json or yaml.
+    - Added the --output-threshold flag in istioctl experimental
+      precheck to control the message output threshold. The default
+      threshold is now warning, which replaces the previous default
+      of info.
+    - Added support for auto-detecting the pilot’s monitoring port
+      if it is not set to the default value of 15014. (Issue
+      #46652)
+    - Added lazy loading for default namespace detection in
+      istioctl to avoid checking the kubeconfig for commands that
+      do not require a Kubernetes environment. (Issue #47159)
+    - Added support for setting loggers’ levels of istio-proxy in
+      the istioctl proxy-config log command with --level <level> or
+      --level level=<level>.
+    - Added an analyzer for showing warning messages about
+      incorrect/missing information related to Istio installations
+      using an External Control Plane. (Issue #47269)
+    - Added IST0162 GatewayPortNotDefinedOnService message to
+      detect an issue where a Gateway port was not exposed by
+      Service.
+    - Fixed istioctl operator remove command to not remove all
+      revisions of the operator controller when the revision is
+      “default” or not specified. (Issue #45242)
+    - Fixed an issue where verify-install had incorrect results
+      when installed deployments were not healthy.
+    - Fixed the istioctl experimental describe command to provide
+      correct Gateway information when using the injected gateway.
+    - Fixed an issue where istioctl analyze would analyze
+      irrelevant configmaps. (Issue #46563)
+    - Fixed istioctl analyze incorrectly showing an error when
+      ServiceEntry hosts are used in a VirtualService destination
+      across a namespace boundary. (Issue #46597)
+    - Fixed an issue where istioctl proxy-config failed to process
+      a config dump from a file if EDS endpoints were not provided.
+      (Issue #47505)
+    - Removed the istioctl experimental revision tag command, which
+      was graduated to istioctl tag.
+
 -------------------------------------------------------------------
 Tue Nov 14 11:14:52 UTC 2023 - kastl@b1-systems.de
 
diff --git a/istioctl.spec b/istioctl.spec
index b0dbe54..193b632 100644
--- a/istioctl.spec
+++ b/istioctl.spec
@@ -19,7 +19,7 @@
 %define __arch_install_post export NO_BRP_STRIP_DEBUG=true
 
 Name:           istioctl
-Version:        1.19.4
+Version:        1.20.0
 Release:        0
 Summary:        CLI for the istio servic mesh in Kubernetes
 License:        Apache-2.0
diff --git a/vendor.tar.gz b/vendor.tar.gz
index 6c9fe44..132bf21 100644
--- a/vendor.tar.gz
+++ b/vendor.tar.gz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:27a5d6a3849d6c0cafa1cfa8ed302679650c6842787bcc026b7126e80d304599
-size 24224876
+oid sha256:24625e0f3918ca2608476f5b7dcc4cd11786a1b175b3ef1d54f6c01acdda52ae
+size 24414590