diff --git a/Gemfile.lock b/Gemfile.lock
index 7d075bb..824c079 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.4.3)
+    activesupport (5.2.8.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -13,7 +13,7 @@ GEM
     backports (3.18.1)
     chronic (0.10.2)
     chunky_png (1.3.11)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -44,7 +44,7 @@ GEM
     fast_blank (1.0.0)
     fastimage (2.2.0)
     ffi (1.13.1)
-    govuk_tech_docs (1.8.2)
+    govuk_tech_docs (1.8.3)
       activesupport
       chronic (~> 0.10.2)
       middleman (~> 4.0)
@@ -58,8 +58,9 @@ GEM
       openapi3_parser
       pry
       redcarpet (~> 3.3.2)
-    haml (5.1.2)
-      temple (>= 0.8.0)
+    haml (6.0.7)
+      temple (>= 0.8.2)
+      thor
       tilt
     hamster (3.0.0)
       concurrent-ruby (~> 1.0)
@@ -112,7 +113,7 @@ GEM
       servolux
       tilt (~> 2.0.9)
       uglifier (~> 3.0)
-    middleman-livereload (3.4.6)
+    middleman-livereload (3.4.7)
       em-websocket (~> 0.5.1)
       middleman-core (>= 3.3)
       rack-livereload (~> 0.3.15)
@@ -126,12 +127,13 @@ GEM
     middleman-syntax (3.0.0)
       middleman-core (>= 3.2)
       rouge (~> 2.0)
-    mini_portile2 (2.4.0)
-    minitest (5.14.1)
+    mini_portile2 (2.8.0)
+    minitest (5.16.3)
     multi_json (1.13.1)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
-    openapi3_parser (0.5.2)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    openapi3_parser (0.9.2)
       commonmarker (~> 0.17)
     padrino-helpers (0.13.3.4)
       i18n (~> 0.6, >= 0.6.7)
@@ -144,6 +146,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (4.0.5)
+    racc (1.6.0)
     rack (2.2.3)
     rack-livereload (0.3.17)
       rack
@@ -170,7 +173,7 @@ GEM
     thor (1.0.1)
     thread_safe (0.3.6)
     tilt (2.0.10)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (3.2.0)
       execjs (>= 0.3.0, < 3)