diff --git a/.github/workflows/docker-hub-publish.yml b/.github/workflows/docker-hub-publish.yml
index 1dcab04..20302aa 100644
--- a/.github/workflows/docker-hub-publish.yml
+++ b/.github/workflows/docker-hub-publish.yml
@@ -34,7 +34,7 @@ jobs:
 
       - name: Build the Docker image
 
-        run: docker build . --file Dockerfile -t mobilesecurity/mdast_cli:2026.7 -t mobilesecurity/mdast_cli:latest
+        run: docker build . --file Dockerfile -t mobilesecurity/mdast_cli:2026.7.1 -t mobilesecurity/mdast_cli:latest
 
 
       - name: Docker Hub push latest image
@@ -42,7 +42,7 @@ jobs:
 
       - name: Docker Hub push tagged image
 
-        run: docker push mobilesecurity/mdast_cli:2026.7
+        run: docker push mobilesecurity/mdast_cli:2026.7.1
 
 
 
diff --git a/mdast_cli/__init__.py b/mdast_cli/__init__.py
index 31cb2e1..05c207a 100644
--- a/mdast_cli/__init__.py
+++ b/mdast_cli/__init__.py
@@ -1 +1 @@
-__version__ = '2026.7'
+__version__ = '2026.7.1'
diff --git a/mdast_cli/distribution_systems/rustore.py b/mdast_cli/distribution_systems/rustore.py
index c80d384..968659b 100644
--- a/mdast_cli/distribution_systems/rustore.py
+++ b/mdast_cli/distribution_systems/rustore.py
@@ -9,6 +9,14 @@
 
 logger = logging.getLogger(__name__)
 
+# Since July 2026 RuStore backapi rejects requests without a client version header:
+# a missing/non-numeric value returns an empty HTTP 400 from the "kittenx" edge,
+# and a numeric value below the minimum returns HTTP 417. The server only enforces
+# a lower bound (currently 247) and accepts any larger integer, so we send a value
+# far above it that never needs bumping as the real RuStore client version changes.
+# Override via the MDAST_RUSTORE_VER_CODE env var if the minimum is ever raised.
+RUSTORE_VER_CODE = os.environ.get('MDAST_RUSTORE_VER_CODE', '2000000000')
+
 
 def get_app_info(package_name):
     """
@@ -21,7 +29,8 @@ def get_app_info(package_name):
     """
     common_headers = {
         'User-Agent': 'mdast-cli/1.0 (+https://stingray-tech.ru)',
-        'Accept': 'application/json'
+        'Accept': 'application/json',
+        'ruStoreVerCode': RUSTORE_VER_CODE
     }
 
     req = requests.get(
diff --git a/setup.py b/setup.py
index 6bce290..861ce6d 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 setup(
     name="mdast_cli",
 
-    version='2026.7',
+    version='2026.7.1',
 
     python_requires='>=3.12',