diff --git a/pubspec.lock b/pubspec.lock
index 1d79bf1..d38f00c 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -79,7 +79,7 @@ packages:
     source: hosted
     version: "6.0.1"
   built_collection:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: built_collection
       url: "https://pub.dartlang.org"
@@ -147,7 +147,7 @@ packages:
       name: coverage
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.14.1"
+    version: "0.14.2"
   crypto:
     dependency: transitive
     description:
@@ -169,6 +169,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.6"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.2.1"
   fixnum:
     dependency: transitive
     description:
@@ -218,6 +225,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "3.1.4"
+  intl:
+    dependency: transitive
+    description:
+      name: intl
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.16.1"
   io:
     dependency: transitive
     description:
@@ -238,7 +252,7 @@ packages:
       name: json_annotation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.1.0"
+    version: "3.1.1"
   logging:
     dependency: transitive
     description:
@@ -273,14 +287,14 @@ packages:
       name: node_interop
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.1"
   node_io:
     dependency: transitive
     description:
       name: node_io
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.1"
+    version: "1.2.0"
   node_preamble:
     dependency: transitive
     description:
@@ -441,21 +455,21 @@ packages:
       name: test
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.15.4"
+    version: "1.15.6"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.18"
+    version: "0.2.18+1"
   test_core:
     dependency: transitive
     description:
       name: test_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.11+1"
+    version: "0.3.11+3"
   timing:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index a810355..4a37bc0 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -9,6 +9,7 @@ environment:
 dependencies:
   js: ^0.6.2
   built_value: ^7.1.0
+  built_collection: ^4.3.2
   rxdart: ^0.24.1
   meta: ^1.2.4