diff --git a/updater/lib/dependabot/api_client.rb b/updater/lib/dependabot/api_client.rb
index 4f9ebb8833..10624f2dcb 100644
--- a/updater/lib/dependabot/api_client.rb
+++ b/updater/lib/dependabot/api_client.rb
@@ -184,11 +184,13 @@ def create_pull_request_data(dependencies, updated_dependency_files, base_commit
         dependencies: dependencies.map do |dep|
           {
             name: dep.name,
-            version: dep.version,
             "previous-version": dep.previous_version,
             requirements: dep.requirements,
             "previous-requirements": dep.previous_requirements
-          }
+          }.merge({
+            version: dep.version,
+            removed: dep.removed? ? true : nil
+          }.compact)
         end,
         "updated-dependency-files": updated_dependency_files,
         "base-commit-sha": base_commit_sha
diff --git a/updater/spec/dependabot/api_client_spec.rb b/updater/spec/dependabot/api_client_spec.rb
index 8226461e6e..b8409a8112 100644
--- a/updater/spec/dependabot/api_client_spec.rb
+++ b/updater/spec/dependabot/api_client_spec.rb
@@ -101,6 +101,34 @@
             end)
       end
     end
+
+    context "with a removed dependency" do
+      let(:removed_dependency) do
+        Dependabot::Dependency.new(
+          name: "removed",
+          package_manager: "bundler",
+          previous_version: "1.7.0",
+          requirements: [],
+          previous_requirements: [],
+          removed: true
+        )
+      end
+
+      it "encodes fields" do
+        client.create_pull_request(1, [removed_dependency, dependency], dependency_files, base_commit, message)
+        expect(WebMock).
+          to(have_requested(:post, create_pull_request_url).
+            with(headers: { "Authorization" => "token" }).
+            with do |req|
+              data = JSON.parse(req.body)["data"]
+              expect(data["dependencies"].first["removed"]).to eq(true)
+              expect(data["dependencies"].first.key?("version")).to eq(false)
+              expect(data["dependencies"].last.key?("removed")).to eq(false)
+              expect(data["dependencies"].last["version"]).to eq("1.8.0")
+              true
+            end)
+      end
+    end
   end
 
   describe "update_pull_request" do