diff --git a/project_task_pull_request_state/models/project_task.py b/project_task_pull_request_state/models/project_task.py
index ff6ded64ab..6207cef697 100644
--- a/project_task_pull_request_state/models/project_task.py
+++ b/project_task_pull_request_state/models/project_task.py
@@ -11,6 +11,8 @@ class ProjectTaskState(models.Model):
         track_visibility="onchange",
         copy=False,
         string="PR State",
+        compute="_compute_pr_state",
+        readonly=False,
     )
 
     def _selection_pr_state(self):
@@ -36,20 +38,21 @@ def write(self, vals):
             self._set_pr_state(vals.get("pr_uri"), vals.get("pr_state"))
         return super(ProjectTaskState, self).write(vals)
 
-    @api.onchange("pr_uri")
-    def onchange_pr_uri(self):
-        """Ser PR state when PR URI is entered in form"""
-        if self.pr_uri and not self.pr_state:
-            if self.project_id and self.project_id.pr_state_default:
-                self.pr_state = self.project_id.pr_state_default
+    @api.depends("pr_uri", "project_id.pr_state_default")
+    def _compute_pr_state(self):
+        for task in self:
+            pr_uri = task.pr_uri
+            if not pr_uri:
+                task.pr_state = False
             else:
-                ICPSudo = self.env["ir.config_parameter"].sudo()
-                pr_state = ICPSudo.get_param(
-                    "project_task_pull_request_state.pr_state_default"
-                )
-                self.pr_state = pr_state
-        if not self.pr_uri:
-            self.pr_state = False
+                if task.project_id and task.project_id.pr_state_default:
+                    task.pr_state = task.project_id.pr_state_default
+                else:
+                    ICPSudo = self.env["ir.config_parameter"].sudo()
+                    pr_state = ICPSudo.get_param(
+                        "project_task_pull_request_state.pr_state_default"
+                    )
+                    task.pr_state = pr_state
 
     def _set_pr_state(self, pr_uri, pr_state=None):
         """Set PR state based on pr_uri