diff --git a/.circleci/config.yml b/.circleci/config.yml
index c95fe71f0..ea5a789d4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,7 +1,7 @@
 ---
 defaults: &defaults
   docker:
-    - image: 'circleci/golang:1.9.2'
+    - image: 'circleci/golang:1.9.4'
   working_directory: '/go/src/github.com/influxdata/telegraf'
 version: 2
 jobs:
diff --git a/appveyor.yml b/appveyor.yml
index 993870209..651478c99 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,11 +12,11 @@ platform: x64
 
 install:
   - IF NOT EXIST "C:\Cache" mkdir C:\Cache
-  - IF NOT EXIST "C:\Cache\go1.9.2.msi" curl -o "C:\Cache\go1.9.2.msi" https://storage.googleapis.com/golang/go1.9.2.windows-amd64.msi
+  - IF NOT EXIST "C:\Cache\go1.9.4.msi" curl -o "C:\Cache\go1.9.4.msi" https://storage.googleapis.com/golang/go1.9.4.windows-amd64.msi
   - IF NOT EXIST "C:\Cache\gnuwin32-bin.zip" curl -o "C:\Cache\gnuwin32-bin.zip" https://dl.influxdata.com/telegraf/ci/make-3.81-bin.zip
   - IF NOT EXIST "C:\Cache\gnuwin32-dep.zip" curl -o "C:\Cache\gnuwin32-dep.zip" https://dl.influxdata.com/telegraf/ci/make-3.81-dep.zip
   - IF EXIST "C:\Go" rmdir /S /Q C:\Go
-  - msiexec.exe /i "C:\Cache\go1.9.2.msi" /quiet
+  - msiexec.exe /i "C:\Cache\go1.9.4.msi" /quiet
   - 7z x "C:\Cache\gnuwin32-bin.zip" -oC:\GnuWin32 -y
   - 7z x "C:\Cache\gnuwin32-dep.zip" -oC:\GnuWin32 -y
   - go version