diff --git a/CMakeLists.txt b/CMakeLists.txt
index e61bd75..d0301b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,12 +7,15 @@ set(sources
 )
 
 set(dependencies
+    esp_https_ota
+
+    expected
+    fmt
+
     cpputils
     espchrono
     espcpputils
-    esp_https_ota
-    expected
-    fmt
+    esphttpdutils
 )
 
 idf_component_register(
diff --git a/src/espasyncota.cpp b/src/espasyncota.cpp
index 446b5a8..47f1b11 100644
--- a/src/espasyncota.cpp
+++ b/src/espasyncota.cpp
@@ -13,7 +13,7 @@
 
 // local includes
 #include "cleanuphelper.h"
-#include "espstrutils.h"
+#include "esphttpdutils.h"
 #include "tickchrono.h"
 
 using namespace std::chrono_literals;
@@ -155,8 +155,8 @@ tl::expected<void, std::string> EspAsyncOta::trigger(std::string_view url, std::
     if (url.empty())
         return tl::make_unexpected("empty firmware url");
 
-    if (const auto result = espcpputils::urlverify(url); !result)
-        return result;
+    if (const auto result = esphttpdutils::urlverify(url); !result)
+        return tl::make_unexpected(fmt::format("could not verify firmware url: {}", result.error()));
 
     m_url = std::string{url};
     m_cert_pem = cert_pem;
diff --git a/src/espasyncota.h b/src/espasyncota.h
index 27aa286..792cb87 100644
--- a/src/espasyncota.h
+++ b/src/espasyncota.h
@@ -14,20 +14,21 @@
 #include "taskutils.h"
 #include "wrappers/event_group.h"
 #include "espchrono.h"
+#include "cpptypesafeenum.h"
 
-enum OtaCloudUpdateStatus
-{
-    Idle,
-    Updating,
-    Failed,
-    Succeeded,
-    NotReady
-};
+#define OtaCloudUpdateStatusValues(x) \
+    x(Idle) \
+    x(Updating) \
+    x(Failed) \
+    x(Succeeded) \
+    x(NotReady)
+DECLARE_TYPESAFE_ENUM(OtaCloudUpdateStatus, : uint8_t, OtaCloudUpdateStatusValues)
+IMPLEMENT_TYPESAFE_ENUM(OtaCloudUpdateStatus, : uint8_t, OtaCloudUpdateStatusValues)
 
 class EspAsyncOta
 {
 public:
-    EspAsyncOta(const char *taskName="asyncOtaTask", uint32_t stackSize=2048, espcpputils::CoreAffinity coreAffinity=espcpputils::CoreAffinity::Core1);
+    EspAsyncOta(const char *taskName="asyncOtaTask", uint32_t stackSize=4096, espcpputils::CoreAffinity coreAffinity=espcpputils::CoreAffinity::Core1);
     ~EspAsyncOta();
 
     tl::expected<void, std::string> startTask();