diff --git a/Gemfile.lock b/Gemfile.lock
index 6b24130f..795801bf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,7 +6,7 @@ PATH
       activerecord-session_store (~> 2)
       defra_ruby_address
       defra_ruby_alert (~> 2.1)
-      defra_ruby_area (~> 2)
+      defra_ruby_area (~> 2.1)
       defra_ruby_email (~> 1)
       defra_ruby_validators
       dibber (~> 0.5)
@@ -170,7 +170,7 @@ GEM
       rest-client (~> 2.0)
     defra_ruby_alert (2.2.1)
       airbrake
-    defra_ruby_area (2.0.3)
+    defra_ruby_area (2.1.0)
       nokogiri (>= 1.13.2)
       rest-client (~> 2.0)
     defra_ruby_email (1.3.0)
@@ -190,8 +190,7 @@ GEM
     dibber (0.7.0)
     diff-lcs (1.5.0)
     docile (1.4.0)
-    domain_name (0.5.20190701)
-      unf (>= 0.0.5, < 1.0.0)
+    domain_name (0.6.20231109)
     dotenv (2.8.1)
     dotenv-rails (2.8.1)
       dotenv (= 2.8.1)
@@ -257,9 +256,9 @@ GEM
     marcel (1.0.2)
     matrix (0.4.2)
     method_source (1.0.0)
-    mime-types (3.4.1)
+    mime-types (3.5.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2023.0218.1)
+    mime-types-data (3.2023.1003)
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
     minitest (5.20.0)
@@ -442,9 +441,6 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     uk_postcode (2.1.8)
-    unf (0.1.4)
-      unf_ext
-    unf_ext (0.0.8.2)
     unicode-display_width (2.4.2)
     uniform_notifier (1.16.0)
     validates_email_format_of (1.7.2)
diff --git a/flood_risk_engine.gemspec b/flood_risk_engine.gemspec
index 715b96f4..fa96f982 100644
--- a/flood_risk_engine.gemspec
+++ b/flood_risk_engine.gemspec
@@ -31,7 +31,7 @@ Gem::Specification.new do |s|
   # Used for address lookups on OS Places
   s.add_dependency "defra_ruby_address"
   # Used to determine the EA area for a registered exemption
-  s.add_dependency "defra_ruby_area", "~> 2"
+  s.add_dependency "defra_ruby_area", "~> 2.1"
   # Used as part of testing. When enabled adds a /email/last-email route from
   # which details of the last email sent by the app can be accessed
   s.add_dependency "defra_ruby_email", "~> 1"