diff --git a/Gemfile.lock b/Gemfile.lock
index 4c9f06417..c31bc6a44 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,6 +58,7 @@ GEM
     daemons (1.4.1)
     date (3.5.1)
     diff-lcs (1.6.2)
+    docile (1.4.1)
     domain_name (0.6.20240107)
     drb (2.2.3)
     em-websocket (0.5.3)
@@ -88,7 +89,7 @@ GEM
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    json (2.18.0)
+    json (2.18.1)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
     logger (1.7.0)
@@ -224,6 +225,12 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 4.0)
       websocket (~> 1.0)
+    simplecov (0.22.0)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-html (0.13.2)
+    simplecov_json_formatter (0.1.4)
     sinatra (4.2.1)
       logger (>= 1.6.0)
       mustermann (~> 3.0)
@@ -335,6 +342,7 @@ DEPENDENCIES
   rubyzip (~> 3.2)
   rushover (~> 0.3.0)
   selenium-webdriver (~> 4.40)
+  simplecov (~> 0.22)
   sinatra (~> 4.1)
   slack-notifier (~> 2.4)
   sqlite3 (~> 2.9)