diff --git a/endian.patch b/endian.patch
new file mode 100644
index 0000000..c970c77
--- /dev/null
+++ b/endian.patch
@@ -0,0 +1,50 @@
+diff --git a/src/admesh/stlinit.cpp b/src/admesh/stlinit.cpp
+index 390fe56..7ac2704 100644
+--- a/src/admesh/stlinit.cpp
++++ b/src/admesh/stlinit.cpp
+@@ -28,7 +28,6 @@
+ 
+ #include <boost/log/trivial.hpp>
+ #include <boost/nowide/cstdio.hpp>
+-#include <boost/detail/endian.hpp>
+ 
+ #include "stl.h"
+ 
+@@ -36,9 +35,9 @@
+ #error "SEEK_SET not defined"
+ #endif
+ 
+-#ifndef BOOST_LITTLE_ENDIAN
++#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
+ extern void stl_internal_reverse_quads(char *buf, size_t cnt);
+-#endif /* BOOST_LITTLE_ENDIAN */
++#endif /* __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__ */
+ 
+ static FILE* stl_open_count_facets(stl_file *stl, const char *file) 
+ {
+@@ -89,10 +88,10 @@ static FILE* stl_open_count_facets(stl_file *stl, const char *file)
+     	// Read the int following the header.  This should contain # of facets.
+ 	  	uint32_t header_num_facets;
+     	bool header_num_faces_read = fread(&header_num_facets, sizeof(uint32_t), 1, fp) != 0;
+-#ifndef BOOST_LITTLE_ENDIAN
++#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
+     	// Convert from little endian to big endian.
+     	stl_internal_reverse_quads((char*)&header_num_facets, 4);
+-#endif /* BOOST_LITTLE_ENDIAN */
++#endif /* __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__ */
+     	if (! header_num_faces_read || num_facets != header_num_facets)
+ 			BOOST_LOG_TRIVIAL(info) << "stl_open_count_facets: Warning: File size doesn't match number of facets in the header: " << file;
+   	}
+@@ -158,10 +157,10 @@ static bool stl_read(stl_file *stl, FILE *fp, int first_facet, bool first)
+       		// Read a single facet from a binary .STL file. We assume little-endian architecture!
+       		if (fread(&facet, 1, SIZEOF_STL_FACET, fp) != SIZEOF_STL_FACET)
+       			return false;
+-#ifndef BOOST_LITTLE_ENDIAN
++#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
+       		// Convert the loaded little endian data to big endian.
+       		stl_internal_reverse_quads((char*)&facet, 48);
+-#endif /* BOOST_LITTLE_ENDIAN */
++#endif /* __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__ */
+     	} else {
+ 			// Read a single facet from an ASCII .STL file
+ 			// skip solid/endsolid
diff --git a/prusa-slicer.spec b/prusa-slicer.spec
index 6a8bdae..eea3d93 100644
--- a/prusa-slicer.spec
+++ b/prusa-slicer.spec
@@ -3,7 +3,7 @@
 
 Name:           prusa-slicer
 Version:        2.2.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        3D printing slicer optimized for Prusa printers
 
 # The main PrusaSlicer code and resources are AGPLv3, with small parts as
@@ -20,6 +20,12 @@ Source0:        https://github.com/prusa3d/PrusaSlicer/archive/version_%version.
 Source1:        %name.desktop
 Source2:        %name.appdata.xml
 
+# Boost 1.73 support
+# https://bugzilla.redhat.com/show_bug.cgi?id=1842011
+# https://github.com/prusa3d/PrusaSlicer/issues/4264
+# https://github.com/prusa3d/PrusaSlicer/pull/4340
+Patch1:         endian.patch
+
 # Highly-parallel uild can run out of memory on PPC64le
 %ifarch ppc64le
 %global _smp_ncpus_max 8
@@ -397,6 +403,9 @@ make test ARGS=-V
 
 
 %changelog
+* Tue Jun 02 2020 Miro Hrončok <mhroncok@redhat.com> - 2.2.0-2
+- Rebuilt and fix for Boost 1.73.0 (#1842011)
+
 * Tue Mar 31 2020 Alexander Jacocks <alexander@redhat.com> - 2.2.0-1
 - Update to 2.2.0.