diff --git a/app/Helpers/Collector/GroupCollector.php b/app/Helpers/Collector/GroupCollector.php
index 7c16da85e9..0d12819740 100644
--- a/app/Helpers/Collector/GroupCollector.php
+++ b/app/Helpers/Collector/GroupCollector.php
@@ -634,7 +634,7 @@ class GroupCollector implements GroupCollectorInterface
         if (array_key_exists('attachment_id', $result) && null !== $result['attachment_id']) {
             $uploaded     = 1 === (int)$result['attachment_uploaded'];
             $attachmentId = (int)$augumentedJournal['attachment_id'];
-            $deleted = null !== $result['attachment_deleted_at'];
+            $deleted      = null !== $result['attachment_deleted_at'];
             if (0 !== $attachmentId && $uploaded && !$deleted) {
                 $result['attachments'][$attachmentId] = [
                     'id'       => $attachmentId,
diff --git a/changelog.md b/changelog.md
index c9cb03f532..b37af58197 100644
--- a/changelog.md
+++ b/changelog.md
@@ -29,7 +29,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - [Discussion 10846](https://github.com/orgs/firefly-iii/discussions/10846) (Add support for WebP format in attachments) started by @Idestius
 - [Issue 10853](https://github.com/firefly-iii/firefly-iii/issues/10853) (Failed to Send Discord Notification) reported by @pimonteiro
 - [Issue 10854](https://github.com/firefly-iii/firefly-iii/issues/10854) (string / null in budget causes budget page to not render) reported by @4e868df3
-- #10871
+- [Issue 10871](https://github.com/firefly-iii/firefly-iii/issues/10871) (Transactions disappear after deleting attachment) reported by @dvmfa90
 - [Discussion 10883](https://github.com/orgs/firefly-iii/discussions/10883) (Initial balance for account is missing from exported CSV) started by @ajaskiewiczpl
 - [Issue 10888](https://github.com/firefly-iii/firefly-iii/issues/10888) (Recurring transation forgets repetition type, skip and weekend action) reported by @mansellrace
 - [Discussion 10891](https://github.com/orgs/firefly-iii/discussions/10891) (User group id is null when downloading new exchange rates) started by @dakennguyen
diff --git a/composer.lock b/composer.lock
index d6f4de6dc8..50beadca73 100644
--- a/composer.lock
+++ b/composer.lock
@@ -11984,16 +11984,16 @@
         },
         {
             "name": "sebastian/cli-parser",
-            "version": "4.0.0",
+            "version": "4.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/cli-parser.git",
-                "reference": "6d584c727d9114bcdc14c86711cd1cad51778e7c"
+                "reference": "8fd93be538992d556aaa45c74570129448a42084"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/cli-parser/zipball/6d584c727d9114bcdc14c86711cd1cad51778e7c",
-                "reference": "6d584c727d9114bcdc14c86711cd1cad51778e7c",
+                "url": "https://api.github.com/repos/sebastianbergmann/cli-parser/zipball/8fd93be538992d556aaa45c74570129448a42084",
+                "reference": "8fd93be538992d556aaa45c74570129448a42084",
                 "shasum": ""
             },
             "require": {
@@ -12005,7 +12005,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "4.0-dev"
+                    "dev-main": "4.1-dev"
                 }
             },
             "autoload": {
@@ -12029,15 +12029,27 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/cli-parser/issues",
                 "security": "https://github.com/sebastianbergmann/cli-parser/security/policy",
-                "source": "https://github.com/sebastianbergmann/cli-parser/tree/4.0.0"
+                "source": "https://github.com/sebastianbergmann/cli-parser/tree/4.1.0"
             },
             "funding": [
                 {
                     "url": "https://github.com/sebastianbergmann",
                     "type": "github"
+                },
+                {
+                    "url": "https://liberapay.com/sebastianbergmann",
+                    "type": "liberapay"
+                },
+                {
+                    "url": "https://thanks.dev/u/gh/sebastianbergmann",
+                    "type": "thanks_dev"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/sebastian/cli-parser",
+                    "type": "tidelift"
                 }
             ],
-            "time": "2025-02-07T04:53:50+00:00"
+            "time": "2025-09-13T14:16:18+00:00"
         },
         {
             "name": "sebastian/comparator",
diff --git a/config/firefly.php b/config/firefly.php
index d4409689d2..dc477a0918 100644
--- a/config/firefly.php
+++ b/config/firefly.php
@@ -78,8 +78,8 @@ return [
         'running_balance_column' => env('USE_RUNNING_BALANCE', false),
         // see cer.php for exchange rates feature flag.
     ],
-    'version'                      => 'develop/2025-09-13',
-    'build_time'                   => 1757740598,
+    'version'                      => '6.4.0',
+    'build_time'                   => 1757780708,
     'api_version'                  => '2.1.0', // field is no longer used.
     'db_version'                   => 26,
 
diff --git a/package-lock.json b/package-lock.json
index 684800d0d4..211a5d750c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4061,9 +4061,9 @@
             "license": "MIT"
         },
         "node_modules/baseline-browser-mapping": {
-            "version": "2.8.2",
-            "resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.8.2.tgz",
-            "integrity": "sha512-NvcIedLxrs9llVpX7wI+Jz4Hn9vJQkCPKrTaHIE0sW/Rj1iq6Fzby4NbyTZjQJNoypBXNaG7tEHkTgONZpwgxQ==",
+            "version": "2.8.3",
+            "resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.8.3.tgz",
+            "integrity": "sha512-mcE+Wr2CAhHNWxXN/DdTI+n4gsPc5QpXpWnyCQWiQYIYZX+ZMJ8juXZgjRa/0/YPJo/NSsgW15/YgmI4nbysYw==",
             "dev": true,
             "license": "Apache-2.0",
             "bin": {