diff --git a/protocol/Cargo.toml b/protocol/Cargo.toml
index 7da5da09..4ec647ff 100644
--- a/protocol/Cargo.toml
+++ b/protocol/Cargo.toml
@@ -23,7 +23,7 @@ path    = "../codegen"
 
 [dependencies]
 cookie-factory = "^0.2.4"
-nom            = "=5.0.0-alpha2"
+nom            = "=5.0.0-beta1"
 url            = "^1.7"
 
 [dependencies.amq-protocol-codegen]
diff --git a/types/Cargo.toml b/types/Cargo.toml
index e0c1330d..714d0cc8 100644
--- a/types/Cargo.toml
+++ b/types/Cargo.toml
@@ -15,7 +15,7 @@ name = "amq_protocol_types"
 
 [dependencies]
 cookie-factory = "^0.2.4"
-nom            = "=5.0.0-alpha2"
+nom            = "=5.0.0-beta1"
 serde_json     = "^1.0"
 
 [dependencies.serde]