Prepare to publish test_core (#1040)

diff --git a/pkgs/test_core/CHANGELOG.md b/pkgs/test_core/CHANGELOG.md
index 826e430..0efcc15 100644
--- a/pkgs/test_core/CHANGELOG.md
+++ b/pkgs/test_core/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## 0.2.6
 
 * Internal cleanup - fix lints.
+* Use the latest `test_api`.
 
 ## 0.2.5
 
diff --git a/pkgs/test_core/pubspec.yaml b/pkgs/test_core/pubspec.yaml
index a5e4c5c..b4860d1 100644
--- a/pkgs/test_core/pubspec.yaml
+++ b/pkgs/test_core/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_core
-version: 0.2.6-dev
+version: 0.2.6
 author: Dart Team <misc@dartlang.org>
 description: A basic library for writing tests and running them on the VM.
 homepage: https://github.com/dart-lang/test/blob/master/pkgs/test_core
@@ -32,8 +32,4 @@
   # properly constrains all features it provides.
   matcher: ">=0.12.5 <0.12.6"
   # Use an exact version until the test_api package is stable.
-  test_api: 0.2.5
-
-dependency_overrides:
-  test_api:
-    path: ./../test_api
+  test_api: 0.2.6