diff --git a/systest/Cargo.toml b/systest/Cargo.toml
index 63f80479..bea35574 100644
--- a/systest/Cargo.toml
+++ b/systest/Cargo.toml
@@ -8,7 +8,7 @@ libc = "0.2"
 openssl-sys = { path = "../openssl-sys" }
 
 [build-dependencies]
-ctest = "0.1"
+ctest = "0.2"
 
 [features]
 vendored = ['openssl-sys/vendored']
diff --git a/systest/build.rs b/systest/build.rs
index 6f3c782b..e8bd221d 100644
--- a/systest/build.rs
+++ b/systest/build.rs
@@ -67,7 +67,7 @@ fn main() {
         cfg.header("openssl/cms.h");
     }
 
-    cfg.type_name(|s, is_struct| {
+    cfg.type_name(|s, is_struct, _is_union| {
         // Add some `*` on some callback parameters to get function pointer to
         // typecheck in C, especially on MSVC.
         if s == "PasswordCallback" {