diff --git a/src/async/audio/AsyncAudioContainerPcm.h b/src/async/audio/AsyncAudioContainerPcm.h
index 5ce66dd..a38bd9f 100644
# add forgotten include
--- a/src/async/audio/AsyncAudioContainerPcm.h
+++ b/src/async/audio/AsyncAudioContainerPcm.h
@@ -40,7 +40,6 @@ An example of how to use the Async::AudioContainer class
 
 #include <vector>
 
-
 /****************************************************************************
  *
  * Project Includes
@@ -48,7 +47,7 @@ An example of how to use the Async::AudioContainer class
  ****************************************************************************/
 
 #include <AsyncAudioContainer.h>
-
+#include <cstdint>
 
 /****************************************************************************
  *
diff --git a/src/async/core/AsyncAtTimer.h b/src/async/core/AsyncAtTimer.h
index 7aa593b..5404a47 100644
# timeval is defined in <<F2>sys/tims.h>
--- a/src/async/core/AsyncAtTimer.h
+++ b/src/async/core/AsyncAtTimer.h
@@ -43,7 +43,7 @@ An example of how to use the AsyncAtTimer class
  *
  ****************************************************************************/
 
-#include <time.h>
+#include <sys/time.h>
 #include <sigc++/sigc++.h>
 
 
diff --git a/src/async/cpp/AsyncCppDnsLookupWorker.cpp b/src/async/cpp/AsyncCppDnsLookupWorker.cpp
index f2e39b0..df73eb9 100644
# res_xx functions are stateless in MUSL, so no res_nxxx is needed
# furthermore no res_close exists
--- a/src/async/cpp/AsyncCppDnsLookupWorker.cpp
+++ b/src/async/cpp/AsyncCppDnsLookupWorker.cpp
@@ -306,12 +306,12 @@ void CppDnsLookupWorker::workerFunc(CppDnsLookupWorker::ThreadContext& ctx)
   if (qtype != 0)
   {
     struct __res_state state;
-    int ret = res_ninit(&state);
+    int ret = res_init();
     if (ret != -1)
     {
       state.options = RES_DEFAULT;
       const char *dname = ctx.label.c_str();
-      ctx.anslen = res_nsearch(&state, dname, ns_c_in, qtype,
+      ctx.anslen = res_search(dname, ns_c_in, qtype,
                                ctx.answer, sizeof(ctx.answer));
       if (ctx.anslen == -1)
       {
@@ -324,7 +324,7 @@ void CppDnsLookupWorker::workerFunc(CppDnsLookupWorker::ThreadContext& ctx)
         //        does not grow with every failed lookup. But even so, it seems
         //        that res_close is not cleaning up properly.
         //        Glibc 2.33-18 on Fedora 34.
-      res_nclose(&state);
+
     }
     else
     {
@@ -538,12 +538,10 @@ void CppDnsLookupWorker::printErrno(const std::string& msg)
 {
   char errbuf[1024];
   char* errmsg = errbuf;
-#if (_POSIX_C_SOURCE >= 200112L) && ! _GNU_SOURCE
+
   int ret = strerror_r(errno, errbuf, sizeof(errbuf));
   assert(ret == 0);
-#else
-  errmsg = strerror_r(errno, errbuf, sizeof(errbuf));
-#endif
+
   std::cerr << "*** " << msg << ": " << errmsg << std::endl;
 } /* CppDnsLookupWorker::printErrno */