diff --git a/Gopkg.lock b/Gopkg.lock
index 5651810..92a57af 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -16,6 +16,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "9d3f241b9a5d4d85e1e521342e1ad16ae4552869b317e9dd1ff9cdf255edfbb0"
+  inputs-digest = "29ecf146a8e6e47859714fa37f93f0a8786eec63e0f84a4cfd9ddd95c3e8c6cf"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index 6e9d634..59a52cb 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -25,6 +25,10 @@
 #   unused-packages = true
 
 
+[[constraint]]
+  branch = "master"
+  name = "git.loafle.net/overflow/annotation-go"
+
 [[constraint]]
   branch = "master"
   name = "git.loafle.net/overflow/util-go"