diff --git a/spec/tc211/termbase_spec.rb b/spec/tc211/termbase_spec.rb
index 0cc2814..11dff6f 100644
--- a/spec/tc211/termbase_spec.rb
+++ b/spec/tc211/termbase_spec.rb
@@ -26,11 +26,33 @@
       end
     end
 
-    context "localized_concept count" do
-      let(:localized_concepts_count) { Dir.glob("concepts/localized_concept/*").count }
+    context "localized_concept" do
+      describe "validate count" do
+        let(:localized_concepts_count) do
+          Dir.glob("concepts/localized_concept/*").count
+        end
 
-      it "should to be 193" do
-        expect(localized_concepts_count).to eq(193)
+        it "should to be 193" do
+          expect(localized_concepts_count).to eq(193)
+        end
+      end
+
+      describe "validate uuids" do
+        let(:localized_concept_files) do
+          Dir.glob("concepts/localized_concept/*")
+        end
+
+        it "should match filenames to ids" do
+          localized_concept_files.each do |localized_concept_file|
+            filename = File.basename(localized_concept_file, ".yaml")
+            localized_concept = YAML.safe_load(
+              File.read(localized_concept_file),
+              permitted_classes: [Date, Time],
+            )
+
+            expect(localized_concept["id"]).to eq(filename)
+          end
+        end
       end
     end
 
diff --git a/tc211-termbase.gemspec b/tc211-termbase.gemspec
index d07bb8d..b54bc30 100644
--- a/tc211-termbase.gemspec
+++ b/tc211-termbase.gemspec
@@ -24,7 +24,7 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency "creek"
   spec.add_runtime_dependency "relaton"
-  spec.add_runtime_dependency "glossarist", "~> 2.0"
+  spec.add_runtime_dependency "glossarist", "~> 2.1"
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake", "~> 13.0"