diff --git a/app/controllers/test/fake_s3_controller.rb b/app/controllers/test/fake_s3_controller.rb
index a8f2ef1d51d..7d59e4ee469 100644
--- a/app/controllers/test/fake_s3_controller.rb
+++ b/app/controllers/test/fake_s3_controller.rb
@@ -20,7 +20,7 @@ def show
       end
     end
 
-    def create
+    def update
       key = params[:key]
 
       self.class.data[key] = request.body.read
diff --git a/app/javascript/packages/document-capture/higher-order/with-background-encrypted-upload.jsx b/app/javascript/packages/document-capture/higher-order/with-background-encrypted-upload.jsx
index 1380c6041a3..3fe147bc796 100644
--- a/app/javascript/packages/document-capture/higher-order/with-background-encrypted-upload.jsx
+++ b/app/javascript/packages/document-capture/higher-order/with-background-encrypted-upload.jsx
@@ -63,7 +63,7 @@ const withBackgroundEncryptedUpload = (Component) => ({ onChange, ...props }) =>
         )
           .then((encryptedValue) =>
             window.fetch(url, {
-              method: 'POST',
+              method: 'PUT',
               body: encryptedValue,
               headers: { 'Content-Type': 'application/octet-stream' },
             }),
diff --git a/config/routes.rb b/config/routes.rb
index ecb1ee551d7..610633dbf9f 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -157,7 +157,7 @@
         delete '/telephony' => 'telephony#destroy'
 
         get '/s3/:key' => 'fake_s3#show', as: :fake_s3
-        post '/s3/:key' => 'fake_s3#create'
+        put '/s3/:key' => 'fake_s3#update'
       end
     end
 
diff --git a/spec/controllers/fake_s3_controller_spec.rb b/spec/controllers/fake_s3_controller_spec.rb
index 89a4468bb7b..09a0aeeaabd 100644
--- a/spec/controllers/fake_s3_controller_spec.rb
+++ b/spec/controllers/fake_s3_controller_spec.rb
@@ -30,9 +30,9 @@
     end
   end
 
-  describe '#create' do
+  describe '#update' do
     subject(:action) do
-      post :create, body: data, params: { key: key }
+      post :update, body: data, params: { key: key }
     end
 
     it 'stores the data in memory' do
diff --git a/spec/javascripts/packages/document-capture/higher-order/with-background-encrypted-upload-spec.jsx b/spec/javascripts/packages/document-capture/higher-order/with-background-encrypted-upload-spec.jsx
index 0b8c4a88b56..3db7c4fc938 100644
--- a/spec/javascripts/packages/document-capture/higher-order/with-background-encrypted-upload-spec.jsx
+++ b/spec/javascripts/packages/document-capture/higher-order/with-background-encrypted-upload-spec.jsx
@@ -137,7 +137,7 @@ describe('document-capture/higher-order/with-background-encrypted-upload', () =>
       expect(await patch.foo_image_url).to.equal('about:blank');
       const [url, params] = window.fetch.getCall(0).args;
       expect(url).to.equal('about:blank');
-      expect(params.method).to.equal('POST');
+      expect(params.method).to.equal('PUT');
       expect(params.body).to.be.instanceOf(ArrayBuffer);
       const bodyAsString = String.fromCharCode.apply(null, new Uint8Array(params.body));
       expect(bodyAsString).to.not.equal('bar');