diff --git a/Cargo.toml b/Cargo.toml
index 7446e48..399ee02 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,7 +43,7 @@ serialize = ["serde", "erased-serde"]
 macros = ["mlua_derive/macros"]
 
 [dependencies]
-mlua_derive = { version = "=0.6.0", optional = true, path = "mlua_derive" }
+mlua_derive = { version = "=0.8.0-beta.1", optional = true, path = "mlua_derive" }
 bstr = { version = "0.2", features = ["std"], default_features = false }
 once_cell = { version = "1.0" }
 num-traits = { version = "0.2.14" }
diff --git a/mlua_derive/Cargo.toml b/mlua_derive/Cargo.toml
index 334c5fa..0554cad 100644
--- a/mlua_derive/Cargo.toml
+++ b/mlua_derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mlua_derive"
-version = "0.6.0"
+version = "0.8.0-beta.1"
 authors = ["Aleksandr Orlenko <zxteam@pm.me>"]
 edition = "2018"
 description = "Procedural macros for the mlua crate."
@@ -21,4 +21,4 @@ proc-macro-error = { version = "1.0", optional = true }
 syn = { version = "1.0", features = ["full"] }
 itertools = { version = "0.10", optional = true }
 regex = { version = "1.4", optional = true }
-once_cell = { version = "1.5", optional = true }
+once_cell = { version = "1.0", optional = true }