diff --git a/ansible/tasks/internal/optimizations.yml b/ansible/tasks/internal/optimizations.yml
index a059244e7..42a0a247c 100644
--- a/ansible/tasks/internal/optimizations.yml
+++ b/ansible/tasks/internal/optimizations.yml
@@ -37,10 +37,3 @@
     - popularity-contest
     - ubuntu-advantage-tools
   when: debpkg_mode or stage2_nix
-
-- name: prefer ipv4 connection resolution
-  become: yes
-  replace:
-    path: /etc/gai.conf
-    regexp: "#precedence ::ffff:0:0/96  100"
-    replace: "precedence ::ffff:0:0/96  100"
diff --git a/common-nix.vars.pkr.hcl b/common-nix.vars.pkr.hcl
index a7cf96806..e80a744d9 100644
--- a/common-nix.vars.pkr.hcl
+++ b/common-nix.vars.pkr.hcl
@@ -1 +1 @@
-postgres-version = "15.6.1.122"
+postgres-version = "15.6.1.123"