diff --git a/Cargo.lock b/Cargo.lock
index dbde0f9e8..224a20b83 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1063,7 +1063,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat"
-version = "1.50.0"
+version = "1.51.0-alpha.0"
 dependencies = [
  "ansi_term 0.12.1",
  "anyhow",
@@ -1139,7 +1139,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat_ffi"
-version = "1.50.0"
+version = "1.51.0-alpha.0"
 dependencies = [
  "anyhow",
  "async-std",
diff --git a/Cargo.toml b/Cargo.toml
index 0ae7a7a38..0e0a95d48 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat"
-version = "1.50.0"
+version = "1.51.0-alpha.0"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"
 license = "MPL-2.0"
diff --git a/deltachat-ffi/Cargo.toml b/deltachat-ffi/Cargo.toml
index 0d40122ed..dc5a94b34 100644
--- a/deltachat-ffi/Cargo.toml
+++ b/deltachat-ffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.50.0"
+version = "1.51.0-alpha.0"
 description = "Deltachat FFI"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"