Update to package:vm_service 4.0.0
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ae706f5..17f6f13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 ## 0.13.9-dev
 
 * Don't crash on empty JSON input files.
+* Loosen the dependency on the `vm_service` package from `>=1.0.0 <4.0.0` to
+`>=1.0.0 <5.0.0`.
 
 ## 0.13.8 - 2020-03-02
 
diff --git a/pubspec.yaml b/pubspec.yaml
index a650ac0..eac0da0 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -13,7 +13,7 @@
   path: '>=0.9.0 <2.0.0'
   source_maps: ^0.10.8
   stack_trace: ^1.3.0
-  vm_service: '>=1.0.0 <4.0.0'
+  vm_service: '>=1.0.0 <5.0.0'
 
 dev_dependencies:
   pedantic: ^1.0.0