diff --git a/rust/flexbuffers/Cargo.toml b/rust/flexbuffers/Cargo.toml
index 51e03dfbd..dcb5220be 100644
--- a/rust/flexbuffers/Cargo.toml
+++ b/rust/flexbuffers/Cargo.toml
@@ -11,15 +11,10 @@ keywords = ["flatbuffers", "flexbuffers", "serialization", "zero-copy"]
 categories = ["encoding", "data-structures", "memory-management"]
 
 [dependencies]
-serde = "1.0.103"
-serde_derive = "*"
+serde = "1.0"
+serde_derive = "1.0"
 byteorder = "1.3.2"
 num_enum = "0.4.1"
 debug_stub_derive = "0.3.0"
 bitflags = "1.2.1"
 
-[dev-dependencies]
-bencher = "*"
-quickcheck = "*"
-quickcheck_derive = "*"
-rand = "*"