diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2546d7e2d..02271ee99 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [1.142.11] - 2024-08-30
+
+### Fixes
+
+- Set backward verification when observing vc-contact-confirm or `vg-member-added` ([#5930](https://github.com/deltachat/deltachat-core-rust/pull/5930)).
+
 ## [1.142.10] - 2024-08-26
 
 ### Fixes
@@ -4792,3 +4798,4 @@ https://github.com/deltachat/deltachat-core-rust/pulls?q=is%3Apr+is%3Aclosed
 [1.142.8]: https://github.com/deltachat/deltachat-core-rust/compare/v1.142.7...v1.142.8
 [1.142.9]: https://github.com/deltachat/deltachat-core-rust/compare/v1.142.8...v1.142.9
 [1.142.10]: https://github.com/deltachat/deltachat-core-rust/compare/v1.142.9..v1.142.10
+[1.142.11]: https://github.com/deltachat/deltachat-core-rust/compare/v1.142.10..v1.142.11
diff --git a/Cargo.lock b/Cargo.lock
index 8525fbfaf..f1e7b7797 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1249,7 +1249,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat"
-version = "1.142.10"
+version = "1.142.11"
 dependencies = [
  "ansi_term",
  "anyhow",
@@ -1343,7 +1343,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-jsonrpc"
-version = "1.142.10"
+version = "1.142.11"
 dependencies = [
  "anyhow",
  "async-channel 2.3.1",
@@ -1368,7 +1368,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-repl"
-version = "1.142.10"
+version = "1.142.11"
 dependencies = [
  "ansi_term",
  "anyhow",
@@ -1383,7 +1383,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat-rpc-server"
-version = "1.142.10"
+version = "1.142.11"
 dependencies = [
  "anyhow",
  "deltachat",
@@ -1412,7 +1412,7 @@ dependencies = [
 
 [[package]]
 name = "deltachat_ffi"
-version = "1.142.10"
+version = "1.142.11"
 dependencies = [
  "anyhow",
  "deltachat",
diff --git a/Cargo.toml b/Cargo.toml
index 25b5bfeee..50000a591 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat"
-version = "1.142.10"
+version = "1.142.11"
 edition = "2021"
 license = "MPL-2.0"
 rust-version = "1.77"
diff --git a/deltachat-ffi/Cargo.toml b/deltachat-ffi/Cargo.toml
index a16743f3f..3da136223 100644
--- a/deltachat-ffi/Cargo.toml
+++ b/deltachat-ffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.142.10"
+version = "1.142.11"
 description = "Deltachat FFI"
 edition = "2018"
 readme = "README.md"
diff --git a/deltachat-jsonrpc/Cargo.toml b/deltachat-jsonrpc/Cargo.toml
index bdd556605..fb29e265e 100644
--- a/deltachat-jsonrpc/Cargo.toml
+++ b/deltachat-jsonrpc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-jsonrpc"
-version = "1.142.10"
+version = "1.142.11"
 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 6650eb1b4..546aaea19 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": "1.142.10"
+  "version": "1.142.11"
 }
diff --git a/deltachat-repl/Cargo.toml b/deltachat-repl/Cargo.toml
index 0cb80ac66..4de00b872 100644
--- a/deltachat-repl/Cargo.toml
+++ b/deltachat-repl/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-repl"
-version = "1.142.10"
+version = "1.142.11"
 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 a758b7ec8..87698ae18 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 = "1.142.10"
+version = "1.142.11"
 description = "Python client for Delta Chat core JSON-RPC interface"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
diff --git a/deltachat-rpc-client/tests/test_securejoin.py b/deltachat-rpc-client/tests/test_securejoin.py
index da7b6090e..effb3149a 100644
--- a/deltachat-rpc-client/tests/test_securejoin.py
+++ b/deltachat-rpc-client/tests/test_securejoin.py
@@ -61,9 +61,16 @@ def test_qr_setup_contact_svg(acfactory) -> None:
 
 
 @pytest.mark.parametrize("protect", [True, False])
-def test_qr_securejoin(acfactory, protect):
+def test_qr_securejoin(acfactory, protect, tmp_path):
     alice, bob = acfactory.get_online_accounts(2)
 
+    # Setup second device for Alice
+    # to test observing securejoin protocol.
+    alice.export_backup(tmp_path)
+    files = list(tmp_path.glob("*.tar"))
+    alice2 = acfactory.get_unconfigured_account()
+    alice2.import_backup(files[0])
+
     logging.info("Alice creates a verified group")
     alice_chat = alice.create_group("Verified group", protect=protect)
     assert alice_chat.get_basic_snapshot().is_protected == protect
@@ -97,6 +104,14 @@ def test_qr_securejoin(acfactory, protect):
     bob_contact_alice_snapshot = bob_contact_alice.get_snapshot()
     assert bob_contact_alice_snapshot.is_verified
 
+    # Start second Alice device.
+    # Alice observes securejoin protocol and verifies Bob on second device.
+    alice2.start_io()
+    alice2.wait_for_securejoin_inviter_success()
+    alice2_contact_bob = alice2.get_contact_by_addr(bob.get_config("addr"))
+    alice2_contact_bob_snapshot = alice2_contact_bob.get_snapshot()
+    assert alice2_contact_bob_snapshot.is_verified
+
 
 def test_qr_securejoin_contact_request(acfactory) -> None:
     """Alice invites Bob to a group when Bob's chat with Alice is in a contact request mode."""
diff --git a/deltachat-rpc-server/Cargo.toml b/deltachat-rpc-server/Cargo.toml
index d9cafb43b..81a51ab75 100644
--- a/deltachat-rpc-server/Cargo.toml
+++ b/deltachat-rpc-server/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-rpc-server"
-version = "1.142.10"
+version = "1.142.11"
 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 b5a81b4aa..a528d574d 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": "1.142.10"
+  "version": "1.142.11"
 }
diff --git a/package.json b/package.json
index df7d448bf..749d62c5e 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": "1.142.10"
+  "version": "1.142.11"
 }
diff --git a/python/pyproject.toml b/python/pyproject.toml
index 634f46d0f..9e1bdede8 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "deltachat"
-version = "1.142.10"
+version = "1.142.11"
 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 05a6be5fc..d77b3a25b 100644
--- a/release-date.in
+++ b/release-date.in
@@ -1 +1 @@
-2024-08-26
\ No newline at end of file
+2024-08-30
\ No newline at end of file
diff --git a/src/securejoin.rs b/src/securejoin.rs
index 4723601a6..fa9a00dbf 100644
--- a/src/securejoin.rs
+++ b/src/securejoin.rs
@@ -637,6 +637,10 @@ pub(crate) async fn observe_securejoin_on_other_device(
         return Ok(HandshakeMessage::Ignore);
     };
     peerstate.set_verified(key.clone(), fingerprint, addr)?;
+    if matches!(step, "vg-member-added" | "vc-contact-confirm") {
+        peerstate.backward_verified_key_id =
+            Some(context.get_config_i64(Config::KeyId).await?).filter(|&id| id > 0);
+    }
     peerstate.prefer_encrypt = EncryptPreference::Mutual;
     peerstate.save_to_db(&context.sql).await?;