diff --git a/Gemfile b/Gemfile
index b52810661..b6c573750 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem "bootsnap", require: false
 gem "gds-api-adapters"
 gem "govuk_app_config"
 gem "govuk_personalisation"
-gem "govuk_publishing_components"
+gem "govuk_publishing_components", git: "https://github.com/alphagov/govuk_publishing_components.git", branch: "one-login-header"
 gem "nokogiri"
 gem "plek"
 gem "redis"
diff --git a/Gemfile.lock b/Gemfile.lock
index d57e2134b..ba777c494 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,17 @@
+GIT
+  remote: https://github.com/alphagov/govuk_publishing_components.git
+  revision: f15876f295fc96e79fa575496515db7162769d5a
+  branch: one-login-header
+  specs:
+    govuk_publishing_components (35.21.2)
+      govuk_app_config
+      govuk_personalisation (>= 0.7.0)
+      kramdown
+      plek
+      rails (>= 6)
+      rouge
+      sprockets (>= 3)
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -143,14 +157,6 @@ GEM
     govuk_personalisation (0.15.0)
       plek (>= 1.9.0)
       rails (>= 6, < 8)
-    govuk_publishing_components (35.21.2)
-      govuk_app_config
-      govuk_personalisation (>= 0.7.0)
-      kramdown
-      plek
-      rails (>= 6)
-      rouge
-      sprockets (>= 3)
     govuk_test (4.0.1)
       brakeman (>= 5.0.2)
       capybara (>= 3.36)
@@ -594,7 +600,7 @@ DEPENDENCIES
   gds-api-adapters
   govuk_app_config
   govuk_personalisation
-  govuk_publishing_components
+  govuk_publishing_components!
   govuk_test
   listen
   minitest