diff --git a/packages/cosmic-swingset/app/version_check.go b/packages/cosmic-swingset/app/version_check.go
new file mode 100644
index 00000000000..22f3860a9e9
--- /dev/null
+++ b/packages/cosmic-swingset/app/version_check.go
@@ -0,0 +1,6 @@
+//+build !go1.14
+
+package app
+
+cosmic-swingset requires requires Golang version 1.14.
+See https://golang.org/dl/ for upgrade information.