diff -urN a/drivers/esci/verify.cpp b/drivers/esci/verify.cpp
--- a/drivers/esci/verify.cpp	2019-11-18 04:08:45.000000000 +0200
+++ b/drivers/esci/verify.cpp	2020-05-09 20:22:00.899968638 +0300
@@ -58,6 +58,7 @@
 
 using namespace utsushi;
 using namespace _drv_::esci;
+using namespace boost::placeholders;
 
 using std::basic_string;
 using std::ios_base;
diff -urN a/lib/monitor.cpp b/lib/monitor.cpp
--- a/lib/monitor.cpp	2019-11-18 04:08:08.000000000 +0200
+++ b/lib/monitor.cpp	2020-05-09 20:22:26.392174029 +0300
@@ -49,6 +49,7 @@
 namespace utsushi {
 
 using boost::filesystem::exists;
+using namespace boost::placeholders;
 
 class monitor::impl
 {
diff -urN a/sane/handle.cpp b/sane/handle.cpp
--- a/sane/handle.cpp	2019-11-18 04:08:08.000000000 +0200
+++ b/sane/handle.cpp	2020-05-09 20:21:49.559223712 +0300
@@ -65,6 +65,7 @@
 using utsushi::_flt_::deskew;
 using utsushi::_flt_::autocrop;
 using utsushi::_flt_::pnm;
+using namespace boost::placeholders;
 
 namespace sane {
 
--- utsushi-0.62.0/gtkmm/pump.cpp.orig	2019-11-18 03:08:48.000000000 +0100
+++ utsushi-0.62.0/gtkmm/pump.cpp	2020-05-10 21:59:32.986379049 +0200
@@ -31,6 +31,8 @@
 namespace utsushi {
 namespace gtkmm {
 
+using namespace boost::placeholders;
+
 pump::pump (idevice::ptr idev)
   : utsushi::pump (idev)
   , idev_ptr_(idev)