diff --git a/test-requirements.txt b/test-requirements.txt
new file mode 100644
index 00000000..da9f588b
--- /dev/null
+++ b/test-requirements.txt
@@ -0,0 +1 @@
+odoo-addon-server_environment @ git+https://github.com/OCA/server-env.git@refs/pull/288/head#subdirectory=server_environment
diff --git a/webservice_server_env/__init__.py b/webservice_server_env/__init__.py
index 071962a3..1a9a001c 100644
--- a/webservice_server_env/__init__.py
+++ b/webservice_server_env/__init__.py
@@ -1,2 +1,2 @@
 from . import models
-from .hooks import uninstall_hook
+from .hooks import post_init_hook, uninstall_hook
diff --git a/webservice_server_env/__manifest__.py b/webservice_server_env/__manifest__.py
index ae315cb6..db9a1c10 100644
--- a/webservice_server_env/__manifest__.py
+++ b/webservice_server_env/__manifest__.py
@@ -14,6 +14,7 @@
     "author": "Creu Blanca, Camptocamp, Odoo Community Association (OCA)",
     "website": "https://github.com/OCA/web-api",
     "depends": ["web", "webservice", "server_environment"],
+    "post_init_hook": "post_init_hook",
     "uninstall_hook": "uninstall_hook",
     "auto_install": True,
 }
diff --git a/webservice_server_env/hooks.py b/webservice_server_env/hooks.py
index 4eeb39d5..b860e489 100644
--- a/webservice_server_env/hooks.py
+++ b/webservice_server_env/hooks.py
@@ -3,32 +3,37 @@
 
 from odoo.addons.server_environment.uninstall import restore_env_managed_columns
 
+ENV_MANAGED_FIELDS = [
+    "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",
+    "oauth2_token_method",
+    "oauth2_client_auth_method",
+    "oauth2_client_auth_header",
+    "oauth2_client_auth_value",
+]
 
-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.
-    """
+def post_init_hook(env):
+    env["webservice.backend"]._preserve_not_env_managed_data(ENV_MANAGED_FIELDS)
+
+
+def uninstall_hook(env):
+    """Restore database columns dropped by server.env.mixin."""
     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",
-        ],
+        ENV_MANAGED_FIELDS,
     )