diff --git a/steep/Gemfile b/steep/Gemfile
index 19eeaaeba..d26e6415b 100644
--- a/steep/Gemfile
+++ b/steep/Gemfile
@@ -1,4 +1,4 @@
 source "https://rubygems.org"
 
 gem "rbs", "~> 3.1.0"
-gem "steep", "~> 1.4.0"
+gem "steep", "~> 1.5.0"
diff --git a/steep/Gemfile.lock b/steep/Gemfile.lock
index f30137e3f..6bed2e212 100644
--- a/steep/Gemfile.lock
+++ b/steep/Gemfile.lock
@@ -1,17 +1,17 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.0.4.3)
+    activesupport (7.0.6)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
     ast (2.4.2)
     concurrent-ruby (1.2.2)
-    csv (3.2.6)
+    csv (3.2.7)
     ffi (1.15.5)
     fileutils (1.7.1)
-    i18n (1.12.0)
+    i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     json (2.6.3)
     language_server-protocol (3.17.0.3)
@@ -19,18 +19,20 @@ GEM
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     logger (1.5.3)
-    minitest (5.18.0)
-    parser (3.2.2.1)
+    minitest (5.18.1)
+    parser (3.2.2.3)
       ast (~> 2.4.1)
+      racc
+    racc (1.7.1)
     rainbow (3.1.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rbs (3.1.0)
     securerandom (0.2.2)
-    steep (1.4.0)
+    steep (1.5.0)
       activesupport (>= 5.1)
-      concurrent-ruby (>= 1.2.2)
+      concurrent-ruby (>= 1.1.10)
       csv (>= 3.0.9)
       fileutils (>= 1.1.0)
       json (>= 2.1.0)
@@ -39,7 +41,7 @@ GEM
       logger (>= 1.3.0)
       parser (>= 3.1)
       rainbow (>= 2.2.2, < 4.0)
-      rbs (>= 2.8.0)
+      rbs (>= 3.1.0)
       securerandom (>= 0.1)
       strscan (>= 1.0.0)
       terminal-table (>= 2, < 4)
@@ -55,7 +57,7 @@ PLATFORMS
 
 DEPENDENCIES
   rbs (~> 3.1.0)
-  steep (~> 1.4.0)
+  steep (~> 1.5.0)
 
 BUNDLED WITH
    2.3.14