diff --git a/pubspec.lock b/pubspec.lock
index de6790cc5..bb414fea3 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -28,14 +28,14 @@ packages:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.4.2"
+    version: "2.5.0-nullsafety.1"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0-nullsafety.1"
   cached_network_image:
     dependency: "direct main"
     description:
@@ -49,14 +49,14 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.0-nullsafety.3"
   charcode:
     dependency: transitive
     description:
       name: charcode
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.3"
+    version: "1.2.0-nullsafety.1"
   chewie:
     dependency: "direct main"
     description:
@@ -70,14 +70,14 @@ packages:
       name: clock
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "1.1.0-nullsafety.1"
   collection:
     dependency: transitive
     description:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.13"
+    version: "1.15.0-nullsafety.3"
   computer:
     dependency: "direct main"
     description:
@@ -196,7 +196,7 @@ packages:
       name: fake_async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0-nullsafety.1"
   ffi:
     dependency: transitive
     description:
@@ -379,14 +379,14 @@ packages:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.8"
+    version: "0.12.10-nullsafety.1"
   meta:
     dependency: transitive
     description:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0-nullsafety.3"
   octo_image:
     dependency: transitive
     description:
@@ -414,7 +414,7 @@ packages:
       name: path
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0-nullsafety.1"
   path_provider:
     dependency: "direct main"
     description:
@@ -526,7 +526,7 @@ packages:
       name: pull_to_refresh
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.1"
+    version: "1.6.2"
   rxdart:
     dependency: transitive
     description:
@@ -608,7 +608,7 @@ packages:
       name: source_span
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.7.0"
+    version: "1.8.0-nullsafety.2"
   sqflite:
     dependency: "direct main"
     description:
@@ -629,21 +629,21 @@ packages:
       name: stack_trace
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.9.5"
+    version: "1.10.0-nullsafety.1"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.0"
+    version: "2.1.0-nullsafety.1"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.5"
+    version: "1.1.0-nullsafety.1"
   super_logging:
     dependency: "direct main"
     description:
@@ -664,21 +664,21 @@ packages:
       name: term_glyph
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0-nullsafety.1"
   test_api:
     dependency: transitive
     description:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.17"
+    version: "0.2.19-nullsafety.2"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0-nullsafety.3"
   uni_links:
     dependency: "direct main"
     description:
@@ -741,7 +741,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0-nullsafety.3"
   video_player:
     dependency: "direct main"
     description:
@@ -799,5 +799,5 @@ packages:
     source: hosted
     version: "2.2.1"
 sdks:
-  dart: ">=2.9.0-14.0.dev <3.0.0"
+  dart: ">=2.10.0-110 <2.11.0"
   flutter: ">=1.19.0-2.0.pre <2.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index a02b2f7d0..d782a4ff4 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -47,7 +47,7 @@ dependencies:
   logging: ^0.11.4
   flutter_image_compress: ^0.6.5+1
   flutter_typeahead: ^1.8.1
-  pull_to_refresh: ^1.5.7
+  pull_to_refresh: ^1.6.2
   fluttertoast: ^4.0.1
   extended_image: ^0.9.0
   video_player: ^0.10.11+1