diff --git a/Gemfile b/Gemfile
index 8dde0498..91a35892 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,7 +15,7 @@ gem "memory_profiler"
 # Recent steep requires Ruby >= 3.0.0.
 # Then skip install on some CI jobs.
 if !ENV['GITHUB_ACTION'] || ENV['INSTALL_STEEP'] == 'true'
-  gem "rbs", "3.7.0", require: false
+  gem "rbs", "3.8.0", require: false
   gem "rbs-inline", require: false
-  gem "steep", "1.9.2", require: false
+  gem "steep", "1.9.3", require: false
 end
diff --git a/rbs_collection.lock.yaml b/rbs_collection.lock.yaml
index cc74a7fd..8310e487 100644
--- a/rbs_collection.lock.yaml
+++ b/rbs_collection.lock.yaml
@@ -6,7 +6,7 @@ gems:
   source:
     type: git
     name: ruby/gem_rbs_collection
-    revision: 71fb7ae83789ae150bdee1cd8a7cd3035b5d79e2
+    revision: ccbd2bbc6be5c195df1d90aa68d64916a9e7d0ab
     remote: https://github.com/ruby/gem_rbs_collection.git
     repo_dir: gems
 - name: erb
@@ -26,7 +26,7 @@ gems:
   source:
     type: git
     name: ruby/gem_rbs_collection
-    revision: 71fb7ae83789ae150bdee1cd8a7cd3035b5d79e2
+    revision: ccbd2bbc6be5c195df1d90aa68d64916a9e7d0ab
     remote: https://github.com/ruby/gem_rbs_collection.git
     repo_dir: gems
 - name: stackprof
@@ -34,7 +34,7 @@ gems:
   source:
     type: git
     name: ruby/gem_rbs_collection
-    revision: 71fb7ae83789ae150bdee1cd8a7cd3035b5d79e2
+    revision: ccbd2bbc6be5c195df1d90aa68d64916a9e7d0ab
     remote: https://github.com/ruby/gem_rbs_collection.git
     repo_dir: gems
 - name: strscan