diff --git a/changelogs/unreleased/gitaly-post-upload-pack-mandatory.yml b/changelogs/unreleased/gitaly-post-upload-pack-mandatory.yml
new file mode 100644
index 0000000000000000000000000000000000000000..edf11484d1ff854c670debc4882ad1ed971506ff
--- /dev/null
+++ b/changelogs/unreleased/gitaly-post-upload-pack-mandatory.yml
@@ -0,0 +1,5 @@
+---
+title: Make Gitaly PostUploadPack mandatory
+merge_request: 13953
+author:
+type: changed
diff --git a/lib/gitlab/workhorse.rb b/lib/gitlab/workhorse.rb
index a362a3a0bc643768c62243fa767adf3f7ecf1142..e5ad9b5a40c2df833e426f7d9a88a57f83454c6d 100644
--- a/lib/gitlab/workhorse.rb
+++ b/lib/gitlab/workhorse.rb
@@ -35,10 +35,7 @@ module Gitlab
                           when 'git_receive_pack'
                             Gitlab::GitalyClient.feature_enabled?(:post_receive_pack)
                           when 'git_upload_pack'
-                            Gitlab::GitalyClient.feature_enabled?(
-                              :post_upload_pack,
-                              status: Gitlab::GitalyClient::MigrationStatus::OPT_OUT
-                            )
+                            true
                           when 'info_refs'
                             true
                           else
diff --git a/spec/lib/gitlab/workhorse_spec.rb b/spec/lib/gitlab/workhorse_spec.rb
index b66afafa174d33626d263eddd3392d5631e19a29..699184ad9fe291dc105e65a4a6bc9893b4107887 100644
--- a/spec/lib/gitlab/workhorse_spec.rb
+++ b/spec/lib/gitlab/workhorse_spec.rb
@@ -228,21 +228,10 @@ describe Gitlab::Workhorse do
         let(:action) { 'git_upload_pack' }
         let(:feature_flag) { :post_upload_pack }
 
-        context 'when action is enabled by feature flag' do
-          it 'includes Gitaly params in the returned value' do
-            allow(Gitlab::GitalyClient).to receive(:feature_enabled?).with(feature_flag).and_return(true)
+        it 'includes Gitaly params in the returned value' do
+          allow(Gitlab::GitalyClient).to receive(:feature_enabled?).with(feature_flag).and_return(true)
 
-            expect(subject).to include(gitaly_params)
-          end
-        end
-
-        context 'when action is not enabled by feature flag' do
-          it 'does not include Gitaly params in the returned value' do
-            status_opt_out = Gitlab::GitalyClient::MigrationStatus::OPT_OUT
-            allow(Gitlab::GitalyClient).to receive(:feature_enabled?).with(feature_flag, status: status_opt_out).and_return(false)
-
-            expect(subject).not_to include(gitaly_params)
-          end
+          expect(subject).to include(gitaly_params)
         end
       end