diff --git a/api/app/controllers/spree/api/taxonomies_controller.rb b/api/app/controllers/spree/api/taxonomies_controller.rb
index 845db1ba602..7aa1f3897f2 100644
--- a/api/app/controllers/spree/api/taxonomies_controller.rb
+++ b/api/app/controllers/spree/api/taxonomies_controller.rb
@@ -15,6 +15,7 @@ def show
 
       # Because JSTree wants parameters in a *slightly* different format
       def jstree
+        Spree::Deprecation.warn("Please don't use `/api/taxonomies/:taxonomy_id/jstree` endpoint. It is deprecated and will be removed in the next future.", caller)
         show
       end
 
diff --git a/api/app/controllers/spree/api/taxons_controller.rb b/api/app/controllers/spree/api/taxons_controller.rb
index ed0feaccea7..094d2c385a4 100644
--- a/api/app/controllers/spree/api/taxons_controller.rb
+++ b/api/app/controllers/spree/api/taxons_controller.rb
@@ -23,6 +23,7 @@ def show
       end
 
       def jstree
+        Spree::Deprecation.warn("Please don't use `/api/taxonomies/:taxonomy_id/taxons/:taxon_id/jstree` endpoint. It is deprecated and will be removed in the next future.", caller)
         show
       end
 
diff --git a/api/spec/requests/spree/api/taxonomies_controller_spec.rb b/api/spec/requests/spree/api/taxonomies_controller_spec.rb
index f0aa4422600..aab1908349f 100644
--- a/api/spec/requests/spree/api/taxonomies_controller_spec.rb
+++ b/api/spec/requests/spree/api/taxonomies_controller_spec.rb
@@ -59,6 +59,7 @@ module Spree
       end
 
       it "gets the jstree-friendly version of a taxonomy" do
+        expect(Spree::Deprecation).to(receive(:warn))
         get spree.jstree_api_taxonomy_path(taxonomy.id)
         expect(json_response["data"]).to eq(taxonomy.root.name)
         expect(json_response["attr"]).to eq({ "id" => taxonomy.root.id, "name" => taxonomy.root.name })
diff --git a/api/spec/requests/spree/api/taxons_controller_spec.rb b/api/spec/requests/spree/api/taxons_controller_spec.rb
index 8a078e80b66..9bca27bdb46 100644
--- a/api/spec/requests/spree/api/taxons_controller_spec.rb
+++ b/api/spec/requests/spree/api/taxons_controller_spec.rb
@@ -92,6 +92,7 @@ module Spree
       end
 
       it "gets all taxons in JSTree form" do
+        expect(Spree::Deprecation).to(receive(:warn))
         get spree.jstree_api_taxonomy_taxon_path(taxonomy, taxon.id)
         response = json_response.first
         expect(response["data"]).to eq(taxon2.name)