diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d5faef96..0ba335f3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -121,7 +121,7 @@ jobs:
       - name: Install Node.js
         uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: "20"
+          node-version: "26"
 
       - name: Install npm dependencies
         run: npm i
diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index 6358f03d..f0a19bab 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -8,7 +8,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: 20
+          node-version: 26
       - name: Install npm packages
         run: npm install
       - name: Check Prettier
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - uses: psf/black@c6755bb741b6481d6b3d3bb563c83fa060db96c9 # 26.3.1
+      - uses: psf/black@87928e6d6761a4a6d22250e1fee5601b3998086e # 26.5.1
 
   lint_php:
     runs-on: ubuntu-latest
@@ -29,7 +29,7 @@ jobs:
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: "Setup PHP ${{ matrix.PHP_VERSION }}"
-        uses: shivammathur/setup-php@accd6127cb78bee3e8082180cb391013d204ef9f # 2.37.0
+        uses: shivammathur/setup-php@7c071dfe9dc99bdf297fa79cb49ea005b9fcadbc # 2.37.1
         with:
           php-version: "${{ matrix.PHP_VERSION }}"
           coverage: "none"
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index dcf184b1..19098db9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -32,6 +32,8 @@ jobs:
             PFSENSE_VERSION: "25.11.1"
           - FREEBSD_VERSION: FreeBSD-16.0-CURRENT
             PFSENSE_VERSION: "26.03"
+          - FREEBSD_VERSION: FreeBSD-16.0-CURRENT
+            PFSENSE_VERSION: "26.03.1"
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
@@ -165,7 +167,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Setup Pages
-        uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0
+        uses: actions/configure-pages@45bfe0192ca1faeb007ade9deae92b16b8254a0d # v6.0.0
 
       - name: Make website directory
         run: mkdir ./www
diff --git a/.github/workflows/schedule_weekly.yml b/.github/workflows/schedule_weekly.yml
index 4e643a72..7a2ad380 100644
--- a/.github/workflows/schedule_weekly.yml
+++ b/.github/workflows/schedule_weekly.yml
@@ -15,7 +15,7 @@ jobs:
     env:
       DAYS_BEFORE_STALE: 60
     steps:
-      - uses: actions/stale@b5d41d4e1d5dceea10e7104786b73624c18a190f # v10.2.0
+      - uses: actions/stale@eb5cf3af3ac0a1aa4c9c45633dd1ae542a27a899 # v10.3.0
         with:
           stale-issue-message: |
             This issue has been automatically marked as stale because it has had no recent activity in the last ${{ env.DAYS_BEFORE_STALE }} days.
diff --git a/README.md b/README.md
index 8b902d1e..3687aa56 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ pkg-static add https://github.com/pfrest/pfSense-pkg-RESTAPI/releases/latest/dow
 Install on pfSense Plus:
 
 ```bash
-pkg-static -C /dev/null add https://github.com/pfrest/pfSense-pkg-RESTAPI/releases/latest/download/pfSense-26.03-pkg-RESTAPI.pkg
+pkg-static -C /dev/null add https://github.com/pfrest/pfSense-pkg-RESTAPI/releases/latest/download/pfSense-26.03.1-pkg-RESTAPI.pkg
 ```
 
 > [!WARNING]
diff --git a/docs/INSTALL_AND_CONFIG.md b/docs/INSTALL_AND_CONFIG.md
index 63fadf30..0c21b0f2 100644
--- a/docs/INSTALL_AND_CONFIG.md
+++ b/docs/INSTALL_AND_CONFIG.md
@@ -17,6 +17,8 @@ run pfSense. It's recommended to follow Netgate's [minimum hardware requirements
 - pfSense CE 2.8.1
 - pfSense Plus 25.11.1
 - pfSense Plus 26.03
+- pfSense Plus 26.03.1
+
 
 !!! Warning
     Installation of the package on unsupported versions of pfSense may result in unexpected behavior and/or system instability.
diff --git a/docs/QUERIES_FILTERS_AND_SORTING.md b/docs/QUERIES_FILTERS_AND_SORTING.md
index 5e85533d..3d7773bf 100644
--- a/docs/QUERIES_FILTERS_AND_SORTING.md
+++ b/docs/QUERIES_FILTERS_AND_SORTING.md
@@ -56,10 +56,11 @@ value array contains a given value for array fields.
 
 Search for objects whose field value is within a given array of values (when the filter value is an array), or search
 for objects whose field value is a substring of a given string (when the filter value is a string).
+
 - Name: `in`
 - Examples: 
-  - `https://pfsense.example.com/api/v2/examples?fieldname__in=example`
-  - `https://pfsense.example.com/api/v2/examples?fieldname__in[]=example1&fieldname__in[]=example2`
+    - `https://pfsense.example.com/api/v2/examples?fieldname__in=example`
+    - `https://pfsense.example.com/api/v2/examples?fieldname__in[]=example1&fieldname__in[]=example2`
 
 ### Less Than (lt)
 
@@ -95,8 +96,8 @@ Search for objects whose field value matches a given format.
 
 - Name: `format`
 - Examples: 
-  - `https://pfsense.example.com/api/v2/examples?fieldname__format=ipv4`
-  - `https://pfsense.example.com/api/v2/examples?fieldname__format=email`
+    - `https://pfsense.example.com/api/v2/examples?fieldname__format=ipv4`
+    - `https://pfsense.example.com/api/v2/examples?fieldname__format=email`
 
 #### Supported Formats
 
diff --git a/package-lock.json b/package-lock.json
index fdc00204..2b7ac456 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
     "": {
       "devDependencies": {
         "@prettier/plugin-php": "^0.25.0",
-        "@stoplight/spectral-cli": "^6.15.1",
+        "@stoplight/spectral-cli": "^6.16.0",
         "prettier": "^3.8.3"
       }
     },
@@ -241,9 +241,9 @@
       }
     },
     "node_modules/@stoplight/spectral-cli": {
-      "version": "6.15.1",
-      "resolved": "https://registry.npmjs.org/@stoplight/spectral-cli/-/spectral-cli-6.15.1.tgz",
-      "integrity": "sha512-ev72bUglbaZvFSMWCP5o1Iso5NGgbLZOAuedvRxYrUMey9dVCR83i033tSFvDv6cpj86HsbEmiilh8vwrY/asQ==",
+      "version": "6.16.0",
+      "resolved": "https://registry.npmjs.org/@stoplight/spectral-cli/-/spectral-cli-6.16.0.tgz",
+      "integrity": "sha512-P1acHIV/hDiO3w0YNUc3pD7/0q68SMAMyWVxAPUGzsAeq50lLpl0obN5j3QITMgJPhPByvBIjBV4ftkBd8nwMg==",
       "dev": true,
       "license": "Apache-2.0",
       "dependencies": {
diff --git a/package.json b/package.json
index e0401f37..8eb7545f 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,6 @@
   "devDependencies": {
     "prettier": "^3.8.3",
     "@prettier/plugin-php": "^0.25.0",
-    "@stoplight/spectral-cli": "^6.15.1"
+    "@stoplight/spectral-cli": "^6.16.0"
   }
 }
diff --git a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Caches/RESTAPIVersionReleasesCache.inc b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Caches/RESTAPIVersionReleasesCache.inc
index 7eddd76a..ca9b9277 100644
--- a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Caches/RESTAPIVersionReleasesCache.inc
+++ b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Caches/RESTAPIVersionReleasesCache.inc
@@ -32,7 +32,16 @@ class RESTAPIVersionReleasesCache extends Cache {
         );
         $releases = json_decode($releases_json, true);
 
-        # Return the fetched releases if in a valid format, otherwise retain the existing cache
-        return is_array($releases) ? $releases : $this->read();
+        # If we don't have an 'assets' key, the response is invalid. Log the response, keep the existing cache
+        if (!is_array($releases) or !array_key_exists(0, $releases) or !array_key_exists('assets', $releases[0])) {
+            Cache::log(
+                level: LOG_ERR,
+                message: "Releases data is malformed, received $releases_json. Keeping existing cache.",
+            );
+            return $this->read();
+        }
+
+        # Return the fetched releases
+        return $releases;
     }
 }
diff --git a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Core/Dispatcher.inc b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Core/Dispatcher.inc
index 5411d4a1..021e7591 100644
--- a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Core/Dispatcher.inc
+++ b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Core/Dispatcher.inc
@@ -3,6 +3,7 @@
 namespace RESTAPI\Core;
 
 use RESTAPI\Models\CronJob;
+use RESTAPI\Models\RESTAPISettings;
 use RESTAPI\Responses\FailedDependencyError;
 use RESTAPI\Responses\ServerError;
 use RESTAPI\Responses\ServiceUnavailableError;
@@ -119,10 +120,18 @@ class Dispatcher {
      * @throws FailedDependencyError When a package requires a PHP include file that could not be found.
      */
     private function check_required_packages(): void {
+        # Check if the user has opted in to using development (-devel) package variants
+        $pkg_config = RESTAPISettings::get_pkg_config();
+        $allow_development_packages = ($pkg_config['allow_development_packages'] ?? '') === 'enabled';
+
         # Loop through each required package and ensure it is present on the system.
         foreach ($this->required_packages as $pkg) {
-            # Return an error if the package is not installed
-            if (!is_pkg_installed($pkg)) {
+            # When the development packages setting is enabled, also accept the -devel variant of the package
+            $devel_pkg = $pkg . '-devel';
+            $pkg_installed = is_pkg_installed($pkg) || ($allow_development_packages && is_pkg_installed($devel_pkg));
+
+            # Return an error if neither the package nor its -devel variant (when allowed) is installed
+            if (!$pkg_installed) {
                 throw new FailedDependencyError(
                     message: "The requested action requires the '$pkg' package but it is not installed.",
                     response_id: 'DISPATCHER_MISSING_REQUIRED_PACKAGE',
diff --git a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Models/WireGuardTunnel.inc b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Models/WireGuardTunnel.inc
index fcf38ce6..63a3b53b 100644
--- a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Models/WireGuardTunnel.inc
+++ b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Models/WireGuardTunnel.inc
@@ -145,6 +145,18 @@ class WireGuardTunnel extends Model {
         return wg_is_key_clamped($privatekey) ? $privatekey : wg_clamp_key($privatekey);
     }
 
+    /**
+     * Extends the default _update method to ensure addresses are removed if the tunnel has an interface assignment
+     */
+    public function _update(): void {
+        # Remove any existing addresses if this tunnel has an existing interface assignment
+        if (NetworkInterface::query(if: $this->name->value)->exists()) {
+            $this->addresses->value = [];
+        }
+
+        parent::_update();
+    }
+
     /**
      * Obtains the next available WireGuard tunnel interface name.
      * @return string The next available WireGuard tunnel interface name (i.e. tun_wg0)
diff --git a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Tests/APICoreDispatcherTestCase.inc b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Tests/APICoreDispatcherTestCase.inc
index ceddaf44..52ea30d5 100644
--- a/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Tests/APICoreDispatcherTestCase.inc
+++ b/pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Tests/APICoreDispatcherTestCase.inc
@@ -6,6 +6,7 @@ use RESTAPI\Core\Dispatcher;
 use RESTAPI\Core\TestCase;
 use RESTAPI\Dispatchers\WireGuardApplyDispatcher;
 use RESTAPI\Models\Package;
+use RESTAPI\Models\RESTAPISettings;
 
 class APICoreDispatcherTestCase extends TestCase {
     /**
@@ -176,4 +177,100 @@ class APICoreDispatcherTestCase extends TestCase {
         # Remove the installed package
         $package->delete();
     }
+
+    /**
+     * Checks that a Dispatcher requiring a package that is not installed throws DISPATCHER_MISSING_REQUIRED_PACKAGE
+     * when the `allow_development_packages` setting is disabled (default).
+     */
+    public function test_required_package_missing_throws_by_default(): void {
+        # Ensure the allow_development_packages setting is disabled
+        $settings = new RESTAPISettings();
+        $settings->from_internal();
+        $original = $settings->allow_development_packages->value;
+
+        if ($original) {
+            $settings->allow_development_packages->value = false;
+            $settings->update(apply: false);
+        }
+
+        # A Dispatcher requiring a package that is not installed should fail
+        $this->assert_throws_response(
+            response_id: 'DISPATCHER_MISSING_REQUIRED_PACKAGE',
+            code: 424,
+            callable: function () {
+                $dispatcher = new RequiredPackagesTestDispatcher();
+                $dispatcher->required_packages = ['pfSense-pkg-some_package_we_dont_have'];
+                $dispatcher->process();
+            },
+        );
+    }
+
+    /**
+     * Checks that when `allow_development_packages` is enabled, a Dispatcher whose required package is not installed
+     * and whose -devel counterpart is also not installed still throws DISPATCHER_MISSING_REQUIRED_PACKAGE. Since we
+     * cannot install arbitrary packages in tests, we verify the inverse: a package whose -devel name also doesn't
+     * exist still fails even with the setting enabled.
+     */
+    public function test_devel_variant_still_fails_when_neither_installed(): void {
+        # Enable the allow_development_packages setting
+        $settings = new RESTAPISettings();
+        $settings->from_internal();
+        $settings->allow_development_packages->value = true;
+        $settings->update(apply: false);
+
+        # Even with the setting on, if neither the base package nor the -devel variant is installed, it should fail
+        $this->assert_throws_response(
+            response_id: 'DISPATCHER_MISSING_REQUIRED_PACKAGE',
+            code: 424,
+            callable: function () {
+                $dispatcher = new RequiredPackagesTestDispatcher();
+                $dispatcher->required_packages = ['pfSense-pkg-some_package_we_dont_have'];
+                $dispatcher->process();
+            },
+        );
+
+        # Restore the setting to its original value
+        $settings->allow_development_packages->value = false;
+        $settings->update(apply: false);
+    }
+
+    /**
+     * Checks that when `allow_development_packages` is enabled, a Dispatcher whose required base package is installed
+     * (using pfSense-pkg-RESTAPI as a proxy for the base package) still passes the required package check.
+     */
+    public function test_base_package_accepted_when_devel_enabled(): void {
+        # Enable the allow_development_packages setting
+        $settings = new RESTAPISettings();
+        $settings->from_internal();
+        $settings->allow_development_packages->value = true;
+        $settings->update(apply: false);
+
+        # The base package (pfSense-pkg-RESTAPI) is installed; the package check should still pass
+        $this->assert_does_not_throw(
+            callable: function () {
+                $dispatcher = new RequiredPackagesTestDispatcher();
+                $dispatcher->required_packages = ['pfSense-pkg-RESTAPI'];
+                $dispatcher->process();
+            },
+        );
+
+        # Restore the setting to its original value
+        $settings->allow_development_packages->value = false;
+        $settings->update(apply: false);
+    }
+}
+
+/**
+ * Defines a test-only Dispatcher used to exercise the $required_packages check without spawning a real background
+ * process. The $required_packages property is exposed publicly so individual tests can assign the package(s) to
+ * check, and _process() is intentionally a no-op so calling process() only runs the required package validation.
+ */
+class RequiredPackagesTestDispatcher extends Dispatcher {
+    public array $required_packages = [];
+
+    /**
+     * Overrides the default _process() with a no-op so tests can validate the package check in isolation.
+     * @param mixed ...$arguments Unused arguments accepted to match the parent signature.
+     */
+    protected function _process(mixed ...$arguments): void {}
 }
diff --git a/requirements.txt b/requirements.txt
index 138b0b14..96ee0a89 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 jinja2~=3.1.6
 pylint~=4.0.5
-black~=26.3.1
+black~=26.5.1
 mkdocs~=1.6.1