diff --git a/appveyor.yml b/appveyor.yml
index d3ed378581..3e07620f32 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -23,8 +23,8 @@ environment:
 install:
   - git submodule update --init
   - rmdir C:\go /s /q
-  - appveyor DownloadFile https://dl.google.com/go/go1.12.5.windows-%GETH_ARCH%.zip
-  - 7z x go1.12.5.windows-%GETH_ARCH%.zip -y -oC:\ > NUL
+  - appveyor DownloadFile https://dl.google.com/go/go1.12.6.windows-%GETH_ARCH%.zip
+  - 7z x go1.12.6.windows-%GETH_ARCH%.zip -y -oC:\ > NUL
   - go version
   - gcc --version
 
diff --git a/vendor/github.com/karalabe/usb/appveyor.yml b/vendor/github.com/karalabe/usb/appveyor.yml
index 1f94b37332..1d921ae51d 100644
--- a/vendor/github.com/karalabe/usb/appveyor.yml
+++ b/vendor/github.com/karalabe/usb/appveyor.yml
@@ -22,8 +22,8 @@ environment:
 
 install:
   - rmdir C:\go /s /q
-  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.12.5.windows-%GOARCH%.zip
-  - 7z x go1.12.5.windows-%GOARCH%.zip -y -oC:\ > NUL
+  - appveyor DownloadFile https://storage.googleapis.com/golang/go1.12.6.windows-%GOARCH%.zip
+  - 7z x go1.12.6.windows-%GOARCH%.zip -y -oC:\ > NUL
   - go version
   - gcc --version