diff --git a/Gemfile.lock b/Gemfile.lock
index ea758e178..6f1f5969f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,7 +152,7 @@ GEM
     defra_ruby_style (0.3.0)
       rubocop (>= 1.0, < 2.0)
     defra_ruby_template (5.4.1)
-    defra_ruby_validators (2.6.0)
+    defra_ruby_validators (2.7.0)
       activemodel
       i18n
       matrix
@@ -163,7 +163,7 @@ GEM
       validates_email_format_of
     diff-lcs (1.5.0)
     docile (1.4.0)
-    domain_name (0.6.20231109)
+    domain_name (0.6.20240107)
     dotenv (2.8.1)
     dotenv-rails (2.8.1)
       dotenv (= 2.8.1)
@@ -207,7 +207,7 @@ GEM
     html-attributes-utils (1.0.2)
       activesupport (>= 6.1.4.4)
     http-accept (1.7.0)
-    http-cookie (1.0.5)
+    http-cookie (1.0.7)
       domain_name (~> 0.5)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
@@ -218,6 +218,7 @@ GEM
     json (2.6.3)
     jwt (2.7.1)
     language_server-protocol (3.17.0.3)
+    logger (1.6.1)
     loofah (2.22.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
@@ -229,9 +230,10 @@ GEM
     marcel (1.0.4)
     matrix (0.4.2)
     method_source (1.1.0)
-    mime-types (3.5.1)
+    mime-types (3.6.0)
+      logger
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2023.1003)
+    mime-types-data (3.2024.1001)
     mini_mime (1.1.5)
     mini_portile2 (2.8.7)
     minitest (5.25.1)
@@ -271,7 +273,7 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
-    phonelib (0.8.6)
+    phonelib (0.9.3)
     protocol-hpack (1.4.2)
     protocol-http (0.25.0)
     protocol-http1 (0.16.0)
@@ -400,6 +402,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
+    simpleidn (0.2.3)
     spring (4.1.3)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
@@ -428,8 +431,9 @@ GEM
     uk_postcode (2.1.8)
     unaccent (0.4.0)
     unicode-display_width (2.5.0)
-    validates_email_format_of (1.7.2)
-      i18n
+    validates_email_format_of (1.8.2)
+      i18n (>= 0.8.0)
+      simpleidn
     vcr (6.2.0)
     web-console (4.2.1)
       actionview (>= 6.0.0)