diff --git a/assets/Calibre Semibold.otf b/assets/Calibre-Semibold.otf
similarity index 100%
rename from assets/Calibre Semibold.otf
rename to assets/Calibre-Semibold.otf
diff --git a/pubspec.yaml b/pubspec.yaml
index beb233e..4b5fa57 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -14,7 +14,7 @@ description: A new Flutter project.
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.1.0 <3.0.0"
+  sdk: ">=2.4.0 <3.0.0"
 
 dependencies:
   flutter:
@@ -22,7 +22,7 @@ dependencies:
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
-  cupertino_icons: ^0.1.2
+  cupertino_icons: ^0.1.3
 
 dev_dependencies:
   flutter_test:
@@ -71,7 +71,7 @@ flutter:
 
     - family: Calibre-Semibold
       fonts:
-        - asset: assets/Calibre Semibold.otf
+        - asset: assets/Calibre-Semibold.otf
 
     - family: CustomIcons
       fonts: