diff --git a/Cargo.toml b/Cargo.toml
index 99821df..c560199 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,3 +1,4 @@
 [workspace]
 
 members = ["ghost-crab", "ghost-crab-macros"]
+resolver = "2"
diff --git a/ghost-crab-macros/Cargo.toml b/ghost-crab-macros/Cargo.toml
index c59b74b..09510a5 100644
--- a/ghost-crab-macros/Cargo.toml
+++ b/ghost-crab-macros/Cargo.toml
@@ -6,6 +6,7 @@ name = "ghost-crab-macros"
 description = "macros for ghost-crab"
 version = "0.1.0"
 edition = "2021"
+license = "MIT"
 
 [dependencies]
 proc-macro2 = "1.0.85"