diff --git a/doc/requirements.txt b/doc/requirements.txt
index 89510877e1..c8c508590a 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -7,7 +7,6 @@ os-api-ref>=1.4.0 # Apache-2.0
 sphinxcontrib-actdiag>=0.8.5 # BSD
 sphinxcontrib-apidoc>=0.2.1 # BSD
 sphinxcontrib-nwdiag>=0.9.5 # BSD
-sphinxcontrib-seqdiag>=0.8.4 # BSD
 docutils>=0.11 # OSI-Approved Open Source, Public Domain
 sphinx>=2.0.0,!=2.1.0 # BSD
 graphviz!=0.5.0,>=0.4 # MIT License
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 3cfe9d93b0..594c01ce6a 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -58,7 +58,6 @@ extensions = [
     'sphinx.ext.todo',
     'sphinx.ext.viewcode',
     'sphinxcontrib.actdiag',
-    'sphinxcontrib.seqdiag',
     'sphinxcontrib.nwdiag',
     'sphinx.ext.graphviz',
     'sphinx_feature_classification.support_matrix',
diff --git a/specs-tests/test_titles.py b/specs-tests/test_titles.py
index 2a106463a9..64c804c0b1 100644
--- a/specs-tests/test_titles.py
+++ b/specs-tests/test_titles.py
@@ -31,7 +31,6 @@ def fake_role(name, rawtext, text, lineno, inliner,
     return [], []
 
 
-directives.register_directive('seqdiag', FakeDirective)
 directives.register_directive('nwdiag', FakeDirective)
 directives.register_directive('actdiag', FakeDirective)
 directives.register_directive('graphviz', FakeDirective)
diff --git a/specs/template.rst b/specs/template.rst
index b30fab87dc..fef6f56c01 100644
--- a/specs/template.rst
+++ b/specs/template.rst
@@ -88,19 +88,6 @@ nwdiag
     }
   }
 
-seqdiag
-
-.. seqdiag::
-
-  seqdiag {
-    browser  -> webserver [label = "GET /index.html"];
-    browser <-- webserver;
-    browser  -> webserver [label = "POST /blog/comment"];
-    webserver  -> database [label = "INSERT comment"];
-    webserver <-- database;
-    browser <-- webserver;
-  }
-
 graphviz
 
 .. graphviz::
diff --git a/specs/version0.5/tls-data-security.rst b/specs/version0.5/tls-data-security.rst
index 90148308f4..0e9ca1b272 100644
--- a/specs/version0.5/tls-data-security.rst
+++ b/specs/version0.5/tls-data-security.rst
@@ -31,7 +31,11 @@ The initial supported implementation for TLS related functions will be
 Barbican, but the interface will be generic such that other implementations
 could be created later.
 
-.. seqdiag:: tls-data-security-1.diag
+.. Note:: a sequence diagram describing the communication between the User,
+          Octavia, Barbican and the Amphora API was removed, the diagram is
+          still available in the `documentation of older stable branches
+          <https://docs.openstack.org/octavia/latest/contributor/specs/version0.5/tls-data-security.html>`_.
+
 
 1. Create a CertificateManager interface for storing and retrieving certificate
 and private key pairs (and intermediate certs / private key passphrase).
@@ -50,7 +54,11 @@ case of invalid TLS data, we will reject the request with a 400 (if it is an
 initial create) or else put the LB into ERROR status (if it is on a failover
 event or during some other non-interactive scenario).
 
-.. seqdiag:: tls-data-security-2.diag
+.. Note:: a sequence diagram describing the communication between the Octavia
+          components was removed, the diagram is still available in the
+          `documentation of older stable branches
+          <https://docs.openstack.org/octavia/latest/contributor/specs/version0.5/tls-data-security.html>`_.
+
 
 2. Create a CertificateGenerator interface to generate certificates from CSRs.
 When the controller creates an Amphora, it will generate a private key and a
diff --git a/zuul.d/projects.yaml b/zuul.d/projects.yaml
index 526586183f..829395ea91 100644
--- a/zuul.d/projects.yaml
+++ b/zuul.d/projects.yaml
@@ -75,6 +75,7 @@
               - ^tox.ini$
         - octavia-grenade-skip-level:
             irrelevant-files: *grenade-irrelevant-files
+            voting: false
         - octavia-v2-dsvm-tls-barbican-fips:
             irrelevant-files: *irrelevant-files
             voting: false
@@ -118,7 +119,7 @@
         - octavia-v2-dsvm-scenario-non-traffic-ops
         - octavia-v2-dsvm-tls-barbican
         - octavia-grenade
-        - octavia-grenade-skip-level
+        #- octavia-grenade-skip-level
     periodic:
       jobs:
         - publish-openstack-octavia-amphora-image-focal: