--- rust-lalrpop-0.17.2.orig/Cargo.toml
+++ rust-lalrpop-0.17.2/Cargo.toml
@@ -75,7 +75,7 @@ version = "0.5"
 [dependencies.unicode-xid]
 version = "0.2"
 [dev-dependencies.rand]
-version = "0.6"
+version = ">=0.6, <0.8"
 
 [features]
 test = []