diff --git a/webservice_server_env/__init__.py b/webservice_server_env/__init__.py
index 0650744f..071962a3 100644
--- a/webservice_server_env/__init__.py
+++ b/webservice_server_env/__init__.py
@@ -1 +1,2 @@
 from . import models
+from .hooks import uninstall_hook
diff --git a/webservice_server_env/__manifest__.py b/webservice_server_env/__manifest__.py
index 1078732f..b328ed8e 100644
--- a/webservice_server_env/__manifest__.py
+++ b/webservice_server_env/__manifest__.py
@@ -14,5 +14,6 @@
     "author": "Creu Blanca, Camptocamp, Odoo Community Association (OCA)",
     "website": "https://github.com/OCA/web-api",
     "depends": ["web", "webservice", "server_environment"],
+    "uninstall_hook": "uninstall_hook",
     "auto_install": True,
 }
diff --git a/webservice_server_env/hooks.py b/webservice_server_env/hooks.py
new file mode 100644
index 00000000..4eeb39d5
--- /dev/null
+++ b/webservice_server_env/hooks.py
@@ -0,0 +1,34 @@
+# Copyright 2025 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo.addons.server_environment.uninstall import restore_env_managed_columns
+
+
+def uninstall_hook(env):
+    """Restore database columns dropped by server.env.mixin.
+
+    When the module is uninstalled, the columns managed by the server
+    environment mixin must be restored and repopulated with current values,
+    so the database remains usable.
+    """
+    restore_env_managed_columns(
+        env,
+        "webservice.backend",
+        [
+            "protocol",
+            "url",
+            "auth_type",
+            "username",
+            "password",
+            "api_key",
+            "api_key_header",
+            "content_type",
+            "oauth2_flow",
+            "oauth2_scope",
+            "oauth2_clientid",
+            "oauth2_client_secret",
+            "oauth2_authorization_url",
+            "oauth2_token_url",
+            "oauth2_audience",
+        ],
+    )