diff --git a/Cargo.toml b/Cargo.toml
index 961de47e..4f010ff2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "derive_more"
-version = "0.99.17"
+version = "1.0.0-beta.1"
 edition = "2021"
 rust-version = "1.65.0"
 description = "Adds #[derive(x)] macros for more traits"
@@ -26,7 +26,7 @@ include = [
 members = ["impl"]
 
 [dependencies]
-derive_more-impl = { version = "=0.99.17", path = "impl" }
+derive_more-impl = { version = "=1.0.0-beta.1", path = "impl" }
 
 [build-dependencies]
 rustc_version = { version = "0.4", optional = true }
diff --git a/impl/Cargo.toml b/impl/Cargo.toml
index a1874637..7e164540 100644
--- a/impl/Cargo.toml
+++ b/impl/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "derive_more-impl"
-version = "0.99.17" # should be the same as main crate version
+version = "1.0.0-beta.1"
 edition = "2021"
 rust-version = "1.65.0"
 description = "Internal implementation of `derive_more` crate"