diff --git a/playbooks/proposal/pre.yaml b/playbooks/proposal/pre.yaml
index d7490eeb33..c1198f969d 100644
--- a/playbooks/proposal/pre.yaml
+++ b/playbooks/proposal/pre.yaml
@@ -6,9 +6,8 @@
       vars:
         ensure_pip_from_packages: True
         ensure_pip_from_upstream_interpreters:
-          - python3.6
-          - python3.7
           - python3.8
+          - python3.9
 
     - name: Install git-review
       pip:
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index d2eace67de..55a0efb54c 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -826,6 +826,9 @@
       Sync content to other projects as a proposed change.
     run: playbooks/proposal/propose-updates.yaml
     protected: true
+    # Note(frickler): The nodeset is pinned because we require py3[89] to be
+    # available. Needs to be adapted in the pre-run playbook when changing.
+    nodeset: ubuntu-focal
     secrets:
       - secret: proposal_ssh_key
         name: ssh_key
diff --git a/zuul.d/projects.yaml b/zuul.d/projects.yaml
index 3364d9acfd..dec27df58d 100644
--- a/zuul.d/projects.yaml
+++ b/zuul.d/projects.yaml
@@ -4827,12 +4827,8 @@
               - publish-wheel-cache-ubuntu-focal-arm64
               - publish-wheel-cache-ubuntu-bionic-arm64
         - propose-updates:
-            nodeset: ubuntu-focal
             branches: master
             vars:
-              ensure_pip_from_upstream_interpreters:
-                - python3.8
-                - python3.9
               update_target: requirements-constraints
 
 - project: