diff --git a/Cargo.toml b/Cargo.toml
index 6e1f5f0..f888a83 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,13 +24,13 @@ vhost-user-master = ["vhost-user"]
 vhost-user-slave = ["vhost-user"]
 
 [dependencies]
-bitflags = ">=1.0.1"
-libc = ">=0.2.39"
+bitflags = "1.0"
+libc = "0.2.39"
 
-vmm-sys-util = ">=0.3.1"
-vm-memory = ">=0.6"
+vmm-sys-util = "0.10.0"
+vm-memory = "0.9.0"
 
 [dev-dependencies]
-tempfile = ">=3.2.0"
-vm-memory = { version = ">=0.6", features=["backend-mmap"] }
+tempfile = "3.2.0"
+vm-memory = { version = "0.9.0", features=["backend-mmap"] }
 serial_test = "0.5"