diff --git a/openssl-sys/Cargo.toml b/openssl-sys/Cargo.toml
index ebcddfc6..fea58bc5 100644
--- a/openssl-sys/Cargo.toml
+++ b/openssl-sys/Cargo.toml
@@ -39,15 +39,16 @@ libressl-pnacl-sys = "2.1.0"
 libressl-pnacl-sys = "2.1.0"
 [target.arm-unknown-nacl.dependencies]
 libressl-pnacl-sys = "2.1.0"
+
 [target.i686-pc-windows-gnu]
-user32-sys = "*"
-gdi32-sys = "*"
+user32-sys = "0.1"
+gdi32-sys = "0.1"
 [target.x86_64-pc-windows-gnu]
-user32-sys = "*"
-gdi32-sys = "*"
+user32-sys = "0.1"
+gdi32-sys = "0.1"
 [target.i686-pc-windows-msvc]
-user32-sys = "*"
-gdi32-sys = "*"
+user32-sys = "0.1"
+gdi32-sys = "0.1"
 [target.x86_64-pc-windows-msvc]
-user32-sys = "*"
-gdi32-sys = "*"
+user32-sys = "0.1"
+gdi32-sys = "0.1"