diff --git a/shard.lock b/shard.lock
index a6d70b0..ec1f18e 100644
--- a/shard.lock
+++ b/shard.lock
@@ -7,7 +7,7 @@ shards:
 
   action-controller:
     git: https://github.com/spider-gazelle/action-controller.git
-    version: 4.10.1
+    version: 5.1.8
 
   active-model:
     git: https://github.com/spider-gazelle/active-model.git
@@ -81,6 +81,10 @@ shards:
     git: https://github.com/luckyframework/habitat.git
     version: 0.4.7
 
+  hot_topic:
+    git: https://github.com/jgaskins/hot_topic.git
+    version: 0.1.0+git.commit.c4577d949221d535f29162343bf503b578308954
+
   http-params-serializable:
     git: https://github.com/place-labs/http-params-serializable.git
     version: 0.5.0
@@ -127,7 +131,7 @@ shards:
 
   openssl_ext:
     git: https://github.com/spider-gazelle/openssl_ext.git
-    version: 2.1.5
+    version: 2.2.0
 
   opentelemetry-api:
     git: https://github.com/wyhaines/opentelemetry-api.cr.git
@@ -135,11 +139,11 @@ shards:
 
   opentelemetry-instrumentation:
     git: https://github.com/wyhaines/opentelemetry-instrumentation.cr.git
-    version: 0.3.6+git.commit.2b4477f57da6b593469deadc3a439e5ed83dd23f
+    version: 0.5.0+git.commit.7d83b9a53c9540fbc159f06eeed5d4bdad5c4377
 
   opentelemetry-sdk: # Overridden
     git: https://github.com/wyhaines/opentelemetry-sdk.cr.git
-    version: 0.5.0+git.commit.5629aa05bfc0837abe6efd8f19ad28b560d9b6b7
+    version: 0.5.1+git.commit.857f4dc24e3c4f2ed04b81118b39beccdecdb105
 
   pars: # Overridden
     git: https://github.com/spider-gazelle/pars.git
@@ -151,11 +155,11 @@ shards:
 
   placeos-log-backend:
     git: https://github.com/place-labs/log-backend.git
-    version: 0.11.1
+    version: 0.11.2
 
   placeos-models:
     git: https://github.com/placeos/models.git
-    version: 8.11.0
+    version: 8.11.2
 
   protobuf:
     git: https://github.com/jeromegn/protobuf.cr.git
diff --git a/shard.yml b/shard.yml
index 0f85764..46e50c7 100644
--- a/shard.yml
+++ b/shard.yml
@@ -13,7 +13,7 @@ targets:
 dependencies:
   action-controller:
     github: spider-gazelle/action-controller
-    version: ~> 4.4
+    version: ~> 5.1
 
   awscr-s3:
     github: taylorfinnell/awscr-s3
diff --git a/spec/helper.cr b/spec/helper.cr
index 34b067a..f245782 100644
--- a/spec/helper.cr
+++ b/spec/helper.cr
@@ -2,8 +2,8 @@ require "placeos-log-backend"
 require "spec"
 require "webmock"
 
-# Helper methods for testing controllers (curl, with_server, context)
-require "../lib/action-controller/spec/curl_context"
+# Helper methods for testing controllers
+require "action-controller/spec_helper"
 
 Spec.before_suite do
   WebMock.allow_net_connect = true
diff --git a/spec/placeos-build/api/driver_spec.cr b/spec/placeos-build/api/driver_spec.cr
index 588c781..0ac045f 100644
--- a/spec/placeos-build/api/driver_spec.cr
+++ b/spec/placeos-build/api/driver_spec.cr
@@ -5,23 +5,23 @@ module PlaceOS::Build
   describe Api::Driver do
     broken_repository_path = "spec/repository_fixtures/broken"
     broken_entrypoint = "drivers/place/broken.cr"
-    with_server do
-      describe "POST ../:file" do
-        it "gracefully handles malformed driver" do
-          tempdir = Dir.tempdir
-          temporary_repository = File.join(tempdir, Path[broken_repository_path].basename)
-          FileUtils.cp_r(broken_repository_path, tempdir)
-          Build.support_local_builds = true
-          Client.client(URI.parse("http://localhost:6000")) do |client|
-            client.repository_path = temporary_repository
-            client.compile(
-              file: broken_entrypoint,
-              url: "local",
-              commit: "abcde",
-            ) do
-              # This should not be called
-              true.should be_false
-            end
+
+    describe "POST ../:file" do
+      it "gracefully handles malformed driver" do
+        tempdir = Dir.tempdir
+        temporary_repository = File.join(tempdir, Path[broken_repository_path].basename)
+        FileUtils.cp_r(broken_repository_path, tempdir)
+        Build.support_local_builds = true
+
+        Client.client(URI.parse("http://localhost:6000"), connection: ActionController::SpecHelper.client) do |client|
+          client.repository_path = temporary_repository
+          client.compile(
+            file: broken_entrypoint,
+            url: "local",
+            commit: "abcde",
+          ) do
+            # This should not be called
+            true.should be_false
           end
         end
       end
diff --git a/src/placeos-build/client.cr b/src/placeos-build/client.cr
index c7ff5a7..e285f0c 100644
--- a/src/placeos-build/client.cr
+++ b/src/placeos-build/client.cr
@@ -42,8 +42,8 @@ module PlaceOS::Build
     end
 
     # :ditto:
-    def self.client(uri : URI, build_version : String = BUILD_VERSION)
-      client = new(uri, build_version)
+    def self.client(uri : URI, build_version : String = BUILD_VERSION, connection : HTTP::Client? = nil)
+      client = new(uri, build_version, connection)
       begin
         yield client
       ensure
@@ -51,11 +51,12 @@ module PlaceOS::Build
       end
     end
 
-    def initialize(uri : URI, @build_version : String = BUILD_VERSION)
+    def initialize(uri : URI, @build_version : String = BUILD_VERSION, connection : HTTP::Client? = nil)
       uri_host = uri.host.presence || raise ArgumentError.new("Could not parse host from URI")
       uri_port = uri.port
       @host = uri_host
       @port = uri_port if uri_port
+      @connection = connection unless connection.nil?
     end
 
     def initialize(host : String? = nil, port : Int32? = nil, @build_version : String = BUILD_VERSION)