diff --git a/Gemfile b/Gemfile
index 2cca000..761bb5a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,7 +15,7 @@ gem "jekyll", "~> 4.3.4"
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
 # gem "github-pages", group: :jekyll_plugins
 
-gem "sinatra", "~> 3.0" # dependencia do jekyll-admin
+gem "sinatra", "~> 4.1" # dependencia do jekyll-admin
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
diff --git a/Gemfile.lock b/Gemfile.lock
index 1c26ae9..4592d9d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,6 +57,7 @@ GEM
     listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    logger (1.6.1)
     mercenary (0.4.0)
     multi_json (1.15.0)
     mustermann (3.0.3)
@@ -64,10 +65,13 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (6.0.1)
-    rack (2.2.10)
-    rack-protection (3.2.0)
+    rack (3.1.8)
+    rack-protection (4.1.0)
       base64 (>= 0.1.0)
-      rack (~> 2.2, >= 2.2.4)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.0.0)
+      rack (>= 3.0.0)
     rake (13.2.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
@@ -78,16 +82,18 @@ GEM
     safe_yaml (1.0.5)
     sass-embedded (1.80.5-x86_64-linux-gnu)
       google-protobuf (~> 4.28)
-    sinatra (3.2.0)
+    sinatra (4.1.0)
+      logger (>= 1.6.0)
       mustermann (~> 3.0)
-      rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.2.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.1.0)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    sinatra-contrib (3.2.0)
+    sinatra-contrib (4.1.0)
       multi_json (>= 0.0.2)
       mustermann (~> 3.0)
-      rack-protection (= 3.2.0)
-      sinatra (= 3.2.0)
+      rack-protection (= 4.1.0)
+      sinatra (= 4.1.0)
       tilt (~> 2.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
@@ -104,7 +110,7 @@ DEPENDENCIES
   jekyll-feed (~> 0.17.0)
   jekyll-seo-tag (~> 2.8.0)
   jekyll-sitemap (~> 1.4.0)
-  sinatra (~> 3.0)
+  sinatra (~> 4.1)
   tzinfo-data
 
 BUNDLED WITH