diff --git a/Gemfile b/Gemfile
index aa837ae..21d96dc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -56,4 +56,4 @@ group :development do
 end
 gem "hotwire-spark", group: :development
 
-gem "fast-mcp", "~> 1.5"
+gem "fast-mcp", "~> 1.6"
diff --git a/Gemfile.lock b/Gemfile.lock
index 3cdbafd..aa4449d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -78,7 +78,7 @@ GEM
     base64 (0.3.0)
     bcrypt_pbkdf (1.1.1)
     benchmark (0.4.1)
-    bigdecimal (3.2.2)
+    bigdecimal (3.2.3)
     bindex (0.8.1)
     bootsnap (1.18.6)
       msgpack (~> 1.2)
@@ -128,13 +128,13 @@ GEM
     erubi (1.13.1)
     et-orbi (1.2.11)
       tzinfo
-    fast-mcp (1.5.0)
+    fast-mcp (1.6.0)
       addressable (~> 2.8)
       base64
       dry-schema (~> 1.14)
       json (~> 2.0)
       mime-types (~> 3.4)
-      rack (~> 3.1)
+      rack (>= 2.0, < 4.0)
     ffi (1.17.2-aarch64-linux-gnu)
     ffi (1.17.2-aarch64-linux-musl)
     ffi (1.17.2-arm-linux-gnu)
@@ -162,7 +162,7 @@ GEM
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    json (2.13.2)
+    json (2.15.0)
     kamal (2.7.0)
       activesupport (>= 7.0)
       base64 (~> 0.2)
@@ -192,7 +192,7 @@ GEM
     mime-types (3.7.0)
       logger
       mime-types-data (~> 3.2025, >= 3.2025.0507)
-    mime-types-data (3.2025.0729)
+    mime-types-data (3.2025.0924)
     mini_mime (1.1.5)
     minitest (5.25.5)
     msgpack (1.8.0)
@@ -246,7 +246,7 @@ GEM
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.8.1)
-    rack (3.2.0)
+    rack (3.2.1)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)
@@ -408,7 +408,7 @@ DEPENDENCIES
   bootsnap
   brakeman
   debug
-  fast-mcp (~> 1.5)
+  fast-mcp (~> 1.6)
   hotwire-spark
   importmap-rails
   kamal