diff --git a/Cargo.toml b/Cargo.toml
index 3a7db846e3..2f6e9f66f5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -88,3 +88,6 @@ members = [
 exclude = [
     "programs/bpf",
 ]
+
+# This prevents a Travis CI error when building for Windows.
+resolver = "2"