diff --git a/CHANGELOG.md b/CHANGELOG.md
index 033ba8d738..e1d72da9d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,33 @@
 # Changelog
 
+## [1.139.6] - 2024-05-25
+
+### Build system
+
+- Update `iroh` to the git version.
+- nix: Add iroh-base output hash.
+- Upgrade iroh to 0.17.0.
+
+### Fixes
+
+- @deltachat/stdio-rpc-server: Do not set RUST_LOG to "info" by default.
+- Acquire write lock on iroh_channels before checking for subscribe_loop.
+
+### Miscellaneous Tasks
+
+- Fix python lint.
+- cargo-deny: Remove unused entry from deny.toml.
+
+### Refactor
+
+- Log IMAP connection type on connection failure.
+
+### Tests
+
+- Viewtype::File attachments are sent unchanged and preserve extensions.
+- deltachat-rpc-client: Add realtime channel tests.
+- deltachat-rpc-client: Regression test for double gossip subscription.
+
 ## [1.139.5] - 2024-05-23
 
 ### API-Changes
@@ -4300,3 +4328,4 @@ https://github.com/deltachat/deltachat-core-rust/pulls?q=is%3Apr+is%3Aclosed
 [1.139.3]: https://github.com/deltachat/deltachat-core-rust/compare/v1.139.2...v1.139.3
 [1.139.4]: https://github.com/deltachat/deltachat-core-rust/compare/v1.139.3...v1.139.4
 [1.139.5]: https://github.com/deltachat/deltachat-core-rust/compare/v1.139.4...v1.139.5
+[1.139.6]: https://github.com/deltachat/deltachat-core-rust/compare/v1.139.5...v1.139.6
diff --git a/Cargo.lock b/Cargo.lock
index 4110c6f216..ea62ad48e0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1324,7 +1324,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat"
-version = "1.139.5"
+version = "1.139.6"
 dependencies = [
  "ansi_term",
  "anyhow",
@@ -1419,7 +1419,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-jsonrpc"
-version = "1.139.5"
+version = "1.139.6"
 dependencies = [
  "anyhow",
  "async-channel 2.2.1",
@@ -1444,7 +1444,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-repl"
-version = "1.139.5"
+version = "1.139.6"
 dependencies = [
  "ansi_term",
  "anyhow",
@@ -1459,7 +1459,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-rpc-server"
-version = "1.139.5"
+version = "1.139.6"
 dependencies = [
  "anyhow",
  "deltachat",
@@ -1488,7 +1488,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat_ffi"
-version = "1.139.5"
+version = "1.139.6"
 dependencies = [
  "anyhow",
  "deltachat",
diff --git a/Cargo.toml b/Cargo.toml
index b9b48d657c..68b667b5f9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat"
-version = "1.139.5"
+version = "1.139.6"
 edition = "2021"
 license = "MPL-2.0"
 rust-version = "1.77"
diff --git a/deltachat-ffi/Cargo.toml b/deltachat-ffi/Cargo.toml
index 340828caa9..1164bd038b 100644
--- a/deltachat-ffi/Cargo.toml
+++ b/deltachat-ffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.139.5"
+version = "1.139.6"
 description = "Deltachat FFI"
 edition = "2018"
 readme = "README.md"
diff --git a/deltachat-jsonrpc/Cargo.toml b/deltachat-jsonrpc/Cargo.toml
index 30aaefd64c..060b928522 100644
--- a/deltachat-jsonrpc/Cargo.toml
+++ b/deltachat-jsonrpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-jsonrpc"
-version = "1.139.5"
+version = "1.139.6"
 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 306b4945b0..8e5d572f17 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": "1.139.5"
+  "version": "1.139.6"
 }
diff --git a/deltachat-repl/Cargo.toml b/deltachat-repl/Cargo.toml
index 50a603a212..c061669e1e 100644
--- a/deltachat-repl/Cargo.toml
+++ b/deltachat-repl/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-repl"
-version = "1.139.5"
+version = "1.139.6"
 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 066016949e..ba7b908078 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 = "1.139.5"
+version = "1.139.6"
 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 01ba6c9951..57325f04f9 100644
--- a/deltachat-rpc-server/Cargo.toml
+++ b/deltachat-rpc-server/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-rpc-server"
-version = "1.139.5"
+version = "1.139.6"
 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 e442b222e4..72d29bc370 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": "1.139.5"
+  "version": "1.139.6"
 }
diff --git a/package.json b/package.json
index 1ef9ec7eac..d57877b8d3 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": "1.139.5"
+  "version": "1.139.6"
 }
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 84f46e19d1..2fd7ea076f 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "deltachat"
-version = "1.139.5"
+version = "1.139.6"
 description = "Python bindings for the Delta Chat Core library using CFFI against the Rust-implemented libdeltachat"
 readme = "README.rst"
 requires-python = ">=3.7"
diff --git a/release-date.in b/release-date.in
index 9132237c8c..1994faa312 100644
--- a/release-date.in
+++ b/release-date.in
@@ -1 +1 @@
-2024-05-23
\ No newline at end of file
+2024-05-25
\ No newline at end of file