diff --git a/app/models/proposal_notification.rb b/app/models/proposal_notification.rb
index 60912d887..686f3ce90 100644
--- a/app/models/proposal_notification.rb
+++ b/app/models/proposal_notification.rb
@@ -7,6 +7,8 @@ class ProposalNotification < ActiveRecord::Base
   validates :proposal, presence: true
   validate :minimum_interval
 
+  scope :public_for_api, -> { joins(:proposal).where("proposals.hidden_at IS NULL") }
+
   def minimum_interval
     return true if proposal.try(:notifications).blank?
     if proposal.notifications.last.created_at > (Time.current - Setting[:proposal_notification_minimum_interval_in_days].to_i.days).to_datetime
diff --git a/config/initializers/graphql.rb b/config/initializers/graphql.rb
index b6d98562b..b899476f7 100644
--- a/config/initializers/graphql.rb
+++ b/config/initializers/graphql.rb
@@ -1,9 +1,10 @@
 API_TYPE_DEFINITIONS = {
   User     => %I[ id username proposals ],
   Debate   => %I[ id title description created_at cached_votes_total cached_votes_up cached_votes_down comments_count hot_score confidence_score geozone_id geozone comments public_author ],
-  Proposal => %I[ id title description external_url cached_votes_up comments_count hot_score confidence_score created_at summary video_url geozone_id retired_at retired_reason retired_explanation geozone comments public_author ],
+  Proposal => %I[ id title description external_url cached_votes_up comments_count hot_score confidence_score created_at summary video_url geozone_id retired_at retired_reason retired_explanation geozone comments proposal_notifications public_author ],
   Comment  => %I[ id commentable_id commentable_type body created_at cached_votes_total cached_votes_up cached_votes_down ancestry confidence_score public_author ],
   Geozone  => %I[ id name ]
+  ProposalNotification => %I[ title body proposal_id created_at proposal ],
 }
 
 type_creator = GraphQL::TypeCreator.new
diff --git a/spec/models/proposal_notification_spec.rb b/spec/models/proposal_notification_spec.rb
index f66b254b6..cd8bf346a 100644
--- a/spec/models/proposal_notification_spec.rb
+++ b/spec/models/proposal_notification_spec.rb
@@ -22,6 +22,22 @@ describe ProposalNotification do
     expect(notification).to_not be_valid
   end
 
+  describe "public_for_api scope" do
+    it "returns proposal notifications" do
+      proposal = create(:proposal)
+      notification = create(:proposal_notification, proposal: proposal)
+
+      expect(ProposalNotification.public_for_api).to include(notification)
+    end
+
+    it "blocks notifications whose proposal is hidden" do
+      proposal = create(:proposal, :hidden)
+      notification = create(:proposal_notification, proposal: proposal)
+
+      expect(ProposalNotification.public_for_api).not_to include(notification)
+    end
+  end
+
   describe "minimum interval between notifications" do
 
     before(:each) do