diff --git a/Gemfile b/Gemfile
index 9993216b00..65644e96a1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem "inspec", path: "."
 # in it in order to package the executable. Hence the odd backwards dependency.
 gem "inspec-bin", path: "./inspec-bin"
 
-gem "ffi", ">= 1.9.14"
+gem "ffi", '1.12.2' # 1.13 does not work on Windows: https://github.com/ffi/ffi/issues/784
 
 group :omnibus do
   gem "rb-readline"