diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 86139c1..a31b00a 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -45,3 +45,8 @@ en:
       messages:
         assigned_title: "Assigned (%{count})"
         assigned: "Assigned"
+    admin:
+      web_hooks:
+        assign_event:
+          name: "Assign Event"
+          details: "When a user assigns or unassigns a topic."
diff --git a/lib/topic_assigner.rb b/lib/topic_assigner.rb
index 5d2587c..59d97a5 100644
--- a/lib/topic_assigner.rb
+++ b/lib/topic_assigner.rb
@@ -248,7 +248,23 @@ class ::TopicAssigner
       )
     end
 
+    # Create a webhook event
+    if WebHook.active_web_hooks(:assign).exists?
+      type = :assigned
+      payload = {
+        type: type,
+        topic_id: @topic.id,
+        topic_title: @topic.title,
+        assigned_to_id: assign_to.id,
+        assigned_to_username: assign_to.username,
+        assigned_by_id: @assigned_by.id,
+        assigned_by_username: @assigned_by.username
+      }.to_json
+      WebHook.enqueue_assign_hooks(type, payload)
+    end
+
     { success: true }
+
   end
 
   def unassign(silent: false)
@@ -328,6 +344,21 @@ class ::TopicAssigner
           action_code: "unassigned"
         )
       end
+
+      # Create a webhook event
+      if WebHook.active_web_hooks(:assign).exists?
+        type = :unassigned
+        payload = {
+          type: type,
+          topic_id: @topic.id,
+          topic_title: @topic.title,
+          unassigned_to_id: assigned_user.id,
+          unassigned_to_username: assigned_user.username,
+          unassigned_by_id: @assigned_by.id,
+          unassigned_by_username: @assigned_by.username
+        }.to_json
+        WebHook.enqueue_assign_hooks(type, payload)
+      end
     end
   end
 
diff --git a/plugin.rb b/plugin.rb
index c90df16..1fbfa47 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -334,4 +334,15 @@ after_initialize do
       assigner.unassign(silent: true)
     end
   end
+
+  class ::WebHook
+    def self.enqueue_assign_hooks(event, payload)
+      if active_web_hooks('assign').exists?
+        WebHook.enqueue_hooks(:assign, event,
+          payload: payload
+        )
+      end
+    end
+  end
+
 end
diff --git a/spec/fabricators/assign_hook_fabricator.rb b/spec/fabricators/assign_hook_fabricator.rb
new file mode 100644
index 0000000..6c145d2
--- /dev/null
+++ b/spec/fabricators/assign_hook_fabricator.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+Fabricator(:assign_web_hook, from: :web_hook) do
+  transient assign_hook: WebHookEventType.find_by(name: 'assign')
+
+  after_build do |web_hook, transients|
+    web_hook.web_hook_event_types = [transients[:assign_hook]]
+  end
+end
diff --git a/spec/integration/assign_spec.rb b/spec/integration/assign_spec.rb
index e31591d..0b03e61 100644
--- a/spec/integration/assign_spec.rb
+++ b/spec/integration/assign_spec.rb
@@ -2,6 +2,7 @@
 
 require 'rails_helper'
 require_relative '../support/assign_allowed_group'
+require_relative '../fabricators/assign_hook_fabricator.rb'
 
 describe 'integration tests' do
   before do
@@ -92,5 +93,22 @@ describe 'integration tests' do
       DiscourseEvent.trigger(:assign_topic, topic, user2, admin, true)
       expect(topic.reload.custom_fields[TopicAssigner::ASSIGNED_TO_ID].to_i).to eq(user2.id)
     end
+
+    it "triggers a webhook for assigned and unassigned" do
+      Fabricate(:assign_web_hook)
+      DiscourseEvent.trigger(:assign_topic, topic, user2, admin, true)
+      job_args = Jobs::EmitWebHookEvent.jobs[0]["args"].first
+      expect(job_args["event_name"]).to eq("assigned")
+      payload = JSON.parse(job_args["payload"])
+      expect(payload["topic_id"]).to eq(topic.id)
+      expect(payload["assigned_to_id"]).to eq(user2.id)
+
+      DiscourseEvent.trigger(:unassign_topic, topic, admin)
+      job_args = Jobs::EmitWebHookEvent.jobs[1]["args"].first
+      expect(job_args["event_name"]).to eq("unassigned")
+      payload = JSON.parse(job_args["payload"])
+      expect(payload["topic_id"]).to eq(topic.id)
+      expect(payload["unassigned_to_id"]).to eq(user2.id)
+    end
   end
 end