diff --git a/gemfiles/typecheck/Gemfile.lock b/gemfiles/typecheck/Gemfile.lock
index 1812bb06f6..be140459b7 100644
--- a/gemfiles/typecheck/Gemfile.lock
+++ b/gemfiles/typecheck/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.2.1)
+    activesupport (7.2.1.1)
       base64
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.3.1)
@@ -37,7 +37,7 @@ GEM
       ast (~> 2.4.1)
       racc
     power_assert (2.0.4)
-    prism (1.1.0)
+    prism (1.2.0)
     racc (1.8.1)
     rainbow (3.1.1)
     rake (13.2.1)
@@ -56,20 +56,20 @@ GEM
       sexp_processor (~> 4.16)
     securerandom (0.3.1)
     sexp_processor (4.17.2)
-    sorbet (0.5.11597)
-      sorbet-static (= 0.5.11597)
-    sorbet-runtime (0.5.11597)
-    sorbet-static (0.5.11597-universal-darwin)
-    sorbet-static (0.5.11597-x86_64-linux)
-    sorbet-static-and-runtime (0.5.11597)
-      sorbet (= 0.5.11597)
-      sorbet-runtime (= 0.5.11597)
+    sorbet (0.5.11604)
+      sorbet-static (= 0.5.11604)
+    sorbet-runtime (0.5.11604)
+    sorbet-static (0.5.11604-universal-darwin)
+    sorbet-static (0.5.11604-x86_64-linux)
+    sorbet-static-and-runtime (0.5.11604)
+      sorbet (= 0.5.11604)
+      sorbet-runtime (= 0.5.11604)
     spoom (1.5.0)
       erubi (>= 1.10.0)
       prism (>= 0.28.0)
       sorbet-static-and-runtime (>= 0.5.10187)
       thor (>= 0.19.2)
-    steep (1.8.0)
+    steep (1.8.1)
       activesupport (>= 5.1)
       concurrent-ruby (>= 1.1.10)
       csv (>= 3.0.9)
diff --git a/rakelib/typecheck.rake b/rakelib/typecheck.rake
index 052a20327e..7a43368555 100644
--- a/rakelib/typecheck.rake
+++ b/rakelib/typecheck.rake
@@ -41,6 +41,7 @@ namespace :typecheck do
         - ./lib/prism/translation/ripper/sexp.rb
         - ./lib/prism/translation/ruby_parser.rb
         - ./lib/prism/inspect_visitor.rb
+        - ./sample/prism/multiplex_constants.rb
         # We want to treat all polyfill files as "typed: false"
       <% polyfills.each do |file| -%>
         - ./<%= file %>