diff --git a/Gemfile.lock b/Gemfile.lock
index b176be59c7..1b705f18de 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,9 +69,10 @@ GEM
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
     ast (2.4.2)
-    autoprefixer-rails (10.4.16.0)
+    autoprefixer-rails (10.4.19.0)
       execjs (~> 2)
     backports (3.25.0)
+    base64 (0.2.0)
     bigdecimal (3.1.8)
     builder (3.3.0)
     byebug (11.1.3)
@@ -92,7 +93,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    commonmarker (0.23.10)
+    commonmarker (0.23.11)
     compass (1.0.3)
       chunky_png (~> 1.2)
       compass-core (~> 1.0.2)
@@ -106,7 +107,7 @@ GEM
     compass-import-once (1.0.5)
       sass (>= 3.2, < 3.5)
     concurrent-ruby (1.3.4)
-    contracts (0.17)
+    contracts (0.17.2)
     crack (1.0.0)
       bigdecimal
       rexml
@@ -122,7 +123,7 @@ GEM
     erubi (1.13.0)
     erubis (2.7.0)
     eventmachine (1.2.7)
-    execjs (2.9.1)
+    execjs (2.10.0)
     faraday (1.10.4)
       faraday-em_http (~> 1.0)
       faraday-em_synchrony (~> 1.0)
@@ -199,22 +200,29 @@ GEM
       sprockets-rails
     govuk_schemas (5.0.2)
       json-schema (>= 2.8, < 4.4)
-    govuk_tech_docs (3.5.0)
+    govuk_tech_docs (4.1.1)
       autoprefixer-rails (~> 10.2)
+      base64
+      bigdecimal
       chronic (~> 0.10.2)
-      haml (< 6.0.0)
+      csv
+      haml (~> 6.0)
       middleman (~> 4.0)
-      middleman-autoprefixer (~> 2.10.0)
-      middleman-compass (>= 4.0.0)
+      middleman-autoprefixer (~> 2.10)
+      middleman-compass (~> 4.0)
       middleman-livereload
       middleman-search-gds
       middleman-sprockets (~> 4.0.0)
-      middleman-syntax (~> 3.2.0)
+      middleman-syntax (~> 3.4)
+      mutex_m
       nokogiri
       openapi3_parser (~> 0.9.0)
-      redcarpet (~> 3.5.1)
-    haml (5.2.2)
-      temple (>= 0.8.0)
+      redcarpet (~> 3.6)
+      sassc-embedded (~> 1.78.0)
+      terser (~> 1.2.3)
+    haml (6.3.0)
+      temple (>= 0.8.2)
+      thor
       tilt
     hamster (3.0.0)
       concurrent-ruby (~> 1.0)
@@ -229,8 +237,8 @@ GEM
     json (2.8.2)
     json-schema (4.3.0)
       addressable (>= 2.8)
-    kramdown (2.4.0)
-      rexml
+    kramdown (2.5.1)
+      rexml (>= 3.3.9)
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     language_server-protocol (3.17.0.3)
@@ -311,7 +319,7 @@ GEM
     middleman-sprockets (4.0.0)
       middleman-core (~> 4.0)
       sprockets (>= 3.0)
-    middleman-syntax (3.2.0)
+    middleman-syntax (3.4.0)
       middleman-core (>= 3.2)
       rouge (~> 3.2)
     mini_mime (1.1.5)
@@ -601,10 +609,10 @@ GEM
     rainbow (3.1.1)
     rake (13.2.1)
     rb-fsevent (0.11.2)
-    rb-inotify (0.10.1)
+    rb-inotify (0.11.1)
       ffi (~> 1.0)
     rchardet (1.8.0)
-    redcarpet (3.5.1)
+    redcarpet (3.6.0)
     regexp_parser (2.9.3)
     request_store (1.7.0)
       rack (>= 1.4)
@@ -659,8 +667,16 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
     sass (3.4.25)
+    sass-embedded (1.79.6-arm64-darwin)
+      google-protobuf (~> 4.27)
+    sass-embedded (1.79.6-x86_64-darwin)
+      google-protobuf (~> 4.27)
+    sass-embedded (1.79.6-x86_64-linux-gnu)
+      google-protobuf (~> 4.27)
     sassc (2.4.0)
       ffi (~> 1.9)
+    sassc-embedded (1.78.0)
+      sass-embedded (~> 1.78)
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
@@ -686,7 +702,9 @@ GEM
       sprockets (>= 3.0.0)
     statsd-ruby (1.5.0)
     temple (0.10.3)
-    thor (1.3.1)
+    terser (1.2.4)
+      execjs (>= 0.3.0, < 3)
+    thor (1.3.2)
     tilt (2.0.11)
     timeout (0.4.1)
     toml (0.3.0)
@@ -703,7 +721,7 @@ GEM
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
-    webrick (1.8.2)
+    webrick (1.9.1)
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)