diff --git a/.circleci/config.yml b/.circleci/config.yml
index 8af6a4d..da54155 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -68,8 +68,6 @@ jobs:
           environment:
             NPM_CONFIG_PREFIX: /home/node/.npm-global
       - run: npm test
-      - run: node_modules/.bin/codecov
-
   node8:
     docker:
       - image: 'node:8'
diff --git a/.kokoro/test.bat b/.kokoro/test.bat
index a8534ba..d604736 100644
--- a/.kokoro/test.bat
+++ b/.kokoro/test.bat
@@ -17,6 +17,8 @@
 cd /d %~dp0
 cd ..
 
+call npm install -g npm@5 || goto :error
+
 call npm install || goto :error
 call npm run test || goto :error
 
diff --git a/.kokoro/test.sh b/.kokoro/test.sh
index 51f2958..eb25b89 100755
--- a/.kokoro/test.sh
+++ b/.kokoro/test.sh
@@ -22,4 +22,5 @@ cd $(dirname $0)/..
 
 npm install
 npm test
-node_modules/.bin/codecov
+
+bash $KOKORO_GFILE_DIR/codecov.sh
diff --git a/codecov.yaml b/codecov.yaml
new file mode 100644
index 0000000..5724ea9
--- /dev/null
+++ b/codecov.yaml
@@ -0,0 +1,4 @@
+---
+codecov:
+  ci:
+    - source.cloud.google.com