diff --git a/Cargo.lock b/Cargo.lock
index 3e234cf..21c78a7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1700,7 +1700,7 @@ dependencies = [
 
 [[package]]
 name = "rustic-rs"
-version = "0.4.0"
+version = "0.4.0-dev"
 dependencies = [
  "aes256ctr_poly1305aes",
  "anyhow",
diff --git a/Cargo.toml b/Cargo.toml
index 157fb6d..aaa52ba 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rustic-rs"
-version = "0.4.0"
+version = "0.4.0-dev"
 description = """
 fast, encrypted, deduplicated backups powered by pure Rust
 """