diff --git a/tests/apps/ruby/Gemfile b/tests/apps/ruby/Gemfile
index b72a3d784..0c7d992a7 100644
--- a/tests/apps/ruby/Gemfile
+++ b/tests/apps/ruby/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
 ruby '2.6.8'
 
-gem 'sinatra', '~>2.2.2'
+gem 'sinatra', '~>3.0.2'
 gem 'thin'
diff --git a/tests/apps/ruby/Gemfile.lock b/tests/apps/ruby/Gemfile.lock
index d7dd3212f..da98c9a46 100644
--- a/tests/apps/ruby/Gemfile.lock
+++ b/tests/apps/ruby/Gemfile.lock
@@ -3,16 +3,16 @@ GEM
   specs:
     daemons (1.4.0)
     eventmachine (1.2.7)
-    mustermann (2.0.2)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     rack (2.2.4)
-    rack-protection (2.2.2)
+    rack-protection (3.0.2)
       rack
     ruby2_keywords (0.0.5)
-    sinatra (2.2.2)
-      mustermann (~> 2.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.2)
+    sinatra (3.0.2)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.2)
       tilt (~> 2.0)
     thin (1.8.1)
       daemons (~> 1.0, >= 1.0.9)
@@ -24,5 +24,5 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  sinatra (~> 2.2.2)
+  sinatra (~> 3.0.2)
   thin