diff --git a/lib/tapioca/runtime/reflection.rb b/lib/tapioca/runtime/reflection.rb
index 530b57a76..a17c67883 100644
--- a/lib/tapioca/runtime/reflection.rb
+++ b/lib/tapioca/runtime/reflection.rb
@@ -178,13 +178,19 @@ def descendants_of(klass)
       end
 
       # Examines the call stack to identify the closest location where a "require" is performed
-      # by searching for the label "<top (required)>". If none is found, it returns the location
+      # by searching for the label "<top (required)>" or "block in <class:...>" in the
+      # case of an ActiveSupport.on_load hook. If none is found, it returns the location
       # labeled "<main>", which is the original call site.
       sig { params(locations: T.nilable(T::Array[Thread::Backtrace::Location])).returns(String) }
       def resolve_loc(locations)
         return "" unless locations
 
-        resolved_loc = locations.find { |loc| REQUIRED_FROM_LABELS.include?(loc.label) }
+        resolved_loc = locations.find do |loc|
+          label = loc.label
+          next unless label
+
+          REQUIRED_FROM_LABELS.include?(label) || label.start_with?("block in <class:")
+        end
         return "" unless resolved_loc
 
         resolved_loc.absolute_path || ""
diff --git a/spec/tapioca/cli/gem_spec.rb b/spec/tapioca/cli/gem_spec.rb
index 80495571d..f9ea80a91 100644
--- a/spec/tapioca/cli/gem_spec.rb
+++ b/spec/tapioca/cli/gem_spec.rb
@@ -648,6 +648,23 @@ class Secret; end
           assert_success_status(result)
         end
 
+        it "must not include code from an ActiveSupport.on_load hook in ActiveRecord RBIs" do
+          @project.require_real_gem("rails", "7.1.0")
+          # Flipper adds functionality to ActiveRecord via an ActiveSupport.on_load hook
+          @project.require_real_gem("flipper-active_record", "1.3.1")
+
+          @project.bundle_install!
+          result = @project.tapioca("gem")
+
+          assert_empty_stderr(result)
+          assert_success_status(result)
+
+          activerecord_rbi_file = T.must(
+            Dir.glob("#{@project.absolute_path}/sorbet/rbi/gems/activerecord@7.1.0.rbi").first,
+          )
+          refute_includes(File.read(activerecord_rbi_file), "class Flipper")
+        end
+
         it "must generate multiple gem RBIs" do
           foo = mock_gem("foo", "0.0.1") do
             write!("lib/foo.rb", FOO_RB)