diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce4e0ce49..00929120b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## [1.155.0] - 2025-01-23
+
+### API-Changes
+
+- Add JSON-RPC API to get past members.
+
+### Build system
+
+- Update Rust.
+- Increase MSRV to 1.81.0
+
+### Features / Changes
+
+- feat: Set BccSelf to true when receiving a sync message  ([#6434](https://github.com/deltachat/deltachat-core-rust/pull/6434))
+- File deduplication ([#6332](https://github.com/deltachat/deltachat-core-rust/pull/6332))
+
+### Refactor
+
+- Move tests to their own files.
+- Extract `group_changes_msgs()` function ([#6460](https://github.com/deltachat/deltachat-core-rust/pull/6460)).
+
 ## [1.154.3] - 2025-01-20
 
 ### Build system
@@ -5660,3 +5681,4 @@ https://github.com/deltachat/deltachat-core-rust/pulls?q=is%3Apr+is%3Aclosed
 [1.154.1]: https://github.com/deltachat/deltachat-core-rust/compare/v1.154.0..v1.154.1
 [1.154.2]: https://github.com/deltachat/deltachat-core-rust/compare/v1.154.1..v1.154.2
 [1.154.3]: https://github.com/deltachat/deltachat-core-rust/compare/v1.154.2..v1.154.3
+[1.155.0]: https://github.com/deltachat/deltachat-core-rust/compare/v1.154.3..v1.155.0
diff --git a/Cargo.lock b/Cargo.lock
index 8aaec6755..5606ecc9e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1306,7 +1306,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat"
-version = "1.154.3"
+version = "1.155.0"
 dependencies = [
  "anyhow",
  "async-broadcast",
@@ -1408,7 +1408,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-jsonrpc"
-version = "1.154.3"
+version = "1.155.0"
 dependencies = [
  "anyhow",
  "async-channel 2.3.1",
@@ -1433,7 +1433,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-repl"
-version = "1.154.3"
+version = "1.155.0"
 dependencies = [
  "anyhow",
  "deltachat",
@@ -1449,7 +1449,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-rpc-server"
-version = "1.154.3"
+version = "1.155.0"
 dependencies = [
  "anyhow",
  "deltachat",
@@ -1478,7 +1478,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat_ffi"
-version = "1.154.3"
+version = "1.155.0"
 dependencies = [
  "anyhow",
  "deltachat",
diff --git a/Cargo.toml b/Cargo.toml
index 4c0aa6302..0c094c4ef 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat"
-version = "1.154.3"
+version = "1.155.0"
 edition = "2021"
 license = "MPL-2.0"
 rust-version = "1.81"
diff --git a/deltachat-ffi/Cargo.toml b/deltachat-ffi/Cargo.toml
index d8d3b3018..a21bc9753 100644
--- a/deltachat-ffi/Cargo.toml
+++ b/deltachat-ffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.154.3"
+version = "1.155.0"
 description = "Deltachat FFI"
 edition = "2018"
 readme = "README.md"
diff --git a/deltachat-jsonrpc/Cargo.toml b/deltachat-jsonrpc/Cargo.toml
index dccdbd995..1575e2650 100644
--- a/deltachat-jsonrpc/Cargo.toml
+++ b/deltachat-jsonrpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-jsonrpc"
-version = "1.154.3"
+version = "1.155.0"
 description = "DeltaChat JSON-RPC API"
 edition = "2021"
 default-run = "deltachat-jsonrpc-server"
diff --git a/deltachat-jsonrpc/typescript/package.json b/deltachat-jsonrpc/typescript/package.json
index 824496497..21d3ae8a5 100644
--- a/deltachat-jsonrpc/typescript/package.json
+++ b/deltachat-jsonrpc/typescript/package.json
@@ -58,5 +58,5 @@
   },
   "type": "module",
   "types": "dist/deltachat.d.ts",
-  "version": "1.154.3"
+  "version": "1.155.0"
 }
diff --git a/deltachat-repl/Cargo.toml b/deltachat-repl/Cargo.toml
index bd5c95b1d..436fc26a2 100644
--- a/deltachat-repl/Cargo.toml
+++ b/deltachat-repl/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-repl"
-version = "1.154.3"
+version = "1.155.0"
 license = "MPL-2.0"
 edition = "2021"
 repository = "https://github.com/deltachat/deltachat-core-rust"
diff --git a/deltachat-rpc-client/pyproject.toml b/deltachat-rpc-client/pyproject.toml
index df2dda182..963107622 100644
--- a/deltachat-rpc-client/pyproject.toml
+++ b/deltachat-rpc-client/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "deltachat-rpc-client"
-version = "1.154.3"
+version = "1.155.0"
 description = "Python client for Delta Chat core JSON-RPC interface"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
diff --git a/deltachat-rpc-server/Cargo.toml b/deltachat-rpc-server/Cargo.toml
index 551eb3de4..795027da9 100644
--- a/deltachat-rpc-server/Cargo.toml
+++ b/deltachat-rpc-server/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-rpc-server"
-version = "1.154.3"
+version = "1.155.0"
 description = "DeltaChat JSON-RPC server"
 edition = "2021"
 readme = "README.md"
diff --git a/deltachat-rpc-server/npm-package/package.json b/deltachat-rpc-server/npm-package/package.json
index bade959f3..e7ba48f46 100644
--- a/deltachat-rpc-server/npm-package/package.json
+++ b/deltachat-rpc-server/npm-package/package.json
@@ -15,5 +15,5 @@
   },
   "type": "module",
   "types": "index.d.ts",
-  "version": "1.154.3"
+  "version": "1.155.0"
 }
diff --git a/package.json b/package.json
index 1accc27f2..1ced40af6 100644
--- a/package.json
+++ b/package.json
@@ -55,5 +55,5 @@
     "test:mocha": "mocha node/test/test.mjs --growl --reporter=spec --bail --exit"
   },
   "types": "node/dist/index.d.ts",
-  "version": "1.154.3"
+  "version": "1.155.0"
 }
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 2d005d83e..b2ed16af1 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "deltachat"
-version = "1.154.3"
+version = "1.155.0"
 description = "Python bindings for the Delta Chat Core library using CFFI against the Rust-implemented libdeltachat"
 readme = "README.rst"
 requires-python = ">=3.8"
diff --git a/release-date.in b/release-date.in
index 5e15938bb..647736dc1 100644
--- a/release-date.in
+++ b/release-date.in
@@ -1 +1 @@
-2025-01-20
\ No newline at end of file
+2025-01-23
\ No newline at end of file