diff --git a/.drone.jsonnet b/.drone.jsonnet
index 10bfdf2b..6569f585 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -6,7 +6,7 @@ local library = "unordered";
 
 local triggers =
 {
-    branch: [ "master", "develop", "feature/*" ]
+    branch: [ "master", "develop", "feature/*", "bugfix/*" ]
 };
 
 local ubsan = { UBSAN: '1', UBSAN_OPTIONS: 'print_stacktrace=1' };
diff --git a/test/unordered/erase_if.cpp b/test/unordered/erase_if.cpp
index de3f5411..fcea06fa 100644
--- a/test/unordered/erase_if.cpp
+++ b/test/unordered/erase_if.cpp
@@ -1,4 +1,4 @@
-// Copyright 2021 Christian Mazakas.
+// Copyright 2021-2022 Christian Mazakas.
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
@@ -11,9 +11,10 @@
 
 #include "../helpers/test.hpp"
 
+#include <boost/config.hpp>
 #include <string>
 
-#if BOOST_CXX_VERSION >= 201103L
+#if !defined(BOOST_NO_CXX11_REF_QUALIFIERS)
 #define UNORDERED_LVALUE_QUAL &
 #else
 #define UNORDERED_LVALUE_QUAL
diff --git a/test/unordered/scoped_allocator.cpp b/test/unordered/scoped_allocator.cpp
index 08a9397f..a8e02c8b 100644
--- a/test/unordered/scoped_allocator.cpp
+++ b/test/unordered/scoped_allocator.cpp
@@ -1,12 +1,13 @@
 
-// Copyright 2021 Christian Mazakas.
+// Copyright 2021-2022 Christian Mazakas.
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/config.hpp>
 #include <boost/config/pragma_message.hpp>
+#include <boost/config/workaround.hpp>
 
-#if BOOST_CXX_VERSION <= 199711L
+#if BOOST_CXX_VERSION <= 199711L || BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40800)
 
 BOOST_PRAGMA_MESSAGE(
   "scoped allocator adaptor tests only work under C++11 and above")