diff --git a/contrib/Cargo.toml b/contrib/Cargo.toml
index 49d6049d..7ba6505f 100644
--- a/contrib/Cargo.toml
+++ b/contrib/Cargo.toml
@@ -25,7 +25,7 @@ rocket = { version = "0.4.0-dev", path = "../lib/" }
 log = "0.4"
 
 # UUID dependencies.
-uuid = { version = "^0.5", optional = true }
+uuid = { version = ">= 0.5, <= 0.6", optional = true }
 
 # Serialization and templating dependencies.
 serde = { version = "1.0", optional = true }
diff --git a/examples/uuid/Cargo.toml b/examples/uuid/Cargo.toml
index 3dd1bed3..bb2619de 100644
--- a/examples/uuid/Cargo.toml
+++ b/examples/uuid/Cargo.toml
@@ -6,7 +6,7 @@ workspace = "../../"
 [dependencies]
 rocket = { path = "../../lib" }
 rocket_codegen = { path = "../../codegen" }
-uuid = "^0.5"
+uuid = ">= 0.5, <= 0.6"
 lazy_static = "1.0"
 
 [dependencies.rocket_contrib]