diff --git a/Gemfile b/Gemfile
index 07c13cac..d4aa86a5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -58,7 +58,7 @@ gem 'aws-sdk-ssm', '~> 1.211.0'
 gem 'rack-attack', '~> 6.8.0'
 
 # GOV.UK Frontend helpers
-gem 'ccs-frontend_helpers', '~> 3.5.0'
+gem 'ccs-frontend_helpers', '~> 4.0.0'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
diff --git a/Gemfile.lock b/Gemfile.lock
index 25907c04..df2db271 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -121,7 +121,7 @@ GEM
     builder (3.3.0)
     byebug (13.0.0)
       reline (>= 0.6.0)
-    ccs-frontend_helpers (3.5.0)
+    ccs-frontend_helpers (4.0.0)
       rails (>= 7.2)
     concurrent-ruby (1.3.6)
     connection_pool (3.0.2)
@@ -218,7 +218,7 @@ GEM
       drb (~> 2.0)
       prism (~> 1.5)
     msgpack (1.8.0)
-    net-imap (0.5.12)
+    net-imap (0.6.3)
       date
       net-protocol
     net-pop (0.1.2)
@@ -415,7 +415,7 @@ GEM
     terminal-table (4.0.0)
       unicode-display_width (>= 1.1.1, < 4)
     thor (1.5.0)
-    timeout (0.6.0)
+    timeout (0.6.1)
     tsort (0.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
@@ -453,7 +453,7 @@ DEPENDENCIES
   brakeman (~> 8.0.4)
   byebug (~> 13.0.0)
   canonical-rails!
-  ccs-frontend_helpers (~> 3.5.0)
+  ccs-frontend_helpers (~> 4.0.0)
   cssbundling-rails (~> 1.4)
   csv (~> 3.3.5)
   dotenv-rails (~> 3.2.0)