diff --git a/Cargo.toml b/Cargo.toml
index 71f70a670..c71eec56c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ documentation = "https://docs.rs/sea-orm"
 repository = "https://github.com/SeaQL/sea-orm"
 categories = ["database"]
 keywords = ["async", "orm", "mysql", "postgres", "sqlite"]
+rust-version = "1.60"
 
 [package.metadata.docs.rs]
 features = ["default", "sqlx-all", "mock", "runtime-async-std-native-tls"]
diff --git a/sea-orm-cli/Cargo.toml b/sea-orm-cli/Cargo.toml
index 7a16d0166..7e1cd92f1 100644
--- a/sea-orm-cli/Cargo.toml
+++ b/sea-orm-cli/Cargo.toml
@@ -13,6 +13,7 @@ repository = "https://github.com/SeaQL/sea-orm"
 categories = [ "database" ]
 keywords = ["async", "orm", "mysql", "postgres", "sqlite"]
 default-run = "sea-orm-cli"
+rust-version = "1.60"
 
 [lib]
 name = "sea_orm_cli"
diff --git a/sea-orm-codegen/Cargo.toml b/sea-orm-codegen/Cargo.toml
index 757792898..4c11b0490 100644
--- a/sea-orm-codegen/Cargo.toml
+++ b/sea-orm-codegen/Cargo.toml
@@ -9,6 +9,7 @@ documentation = "https://docs.rs/sea-orm"
 repository = "https://github.com/SeaQL/sea-orm"
 categories = ["database"]
 keywords = ["sql", "mysql", "postgres", "sqlite"]
+rust-version = "1.60"
 
 [lib]
 name = "sea_orm_codegen"
diff --git a/sea-orm-macros/Cargo.toml b/sea-orm-macros/Cargo.toml
index fc82c7d67..716683bd2 100644
--- a/sea-orm-macros/Cargo.toml
+++ b/sea-orm-macros/Cargo.toml
@@ -9,6 +9,7 @@ documentation = "https://docs.rs/sea-orm"
 repository = "https://github.com/SeaQL/sea-orm"
 categories = [ "database" ]
 keywords = ["async", "orm", "mysql", "postgres", "sqlite"]
+rust-version = "1.60"
 
 [lib]
 name = "sea_orm_macros"
diff --git a/sea-orm-migration/Cargo.toml b/sea-orm-migration/Cargo.toml
index 8a22664b6..c2ffdd506 100644
--- a/sea-orm-migration/Cargo.toml
+++ b/sea-orm-migration/Cargo.toml
@@ -12,6 +12,7 @@ documentation = "https://docs.rs/sea-orm"
 repository = "https://github.com/SeaQL/sea-orm"
 categories = [ "database" ]
 keywords = ["async", "orm", "mysql", "postgres", "sqlite"]
+rust-version = "1.60"
 
 [lib]
 name = "sea_orm_migration"