diff --git a/facter-gcc11.patch b/facter-gcc11.patch
new file mode 100644
index 0000000..26a50c8
--- /dev/null
+++ b/facter-gcc11.patch
@@ -0,0 +1,47 @@
+diff --git a/lib/src/util/bsd/scoped_ifaddrs.cc b/lib/src/util/bsd/scoped_ifaddrs.cc
+index d61d8a4..fbbea6d 100644
+--- a/lib/src/util/bsd/scoped_ifaddrs.cc
++++ b/lib/src/util/bsd/scoped_ifaddrs.cc
+@@ -1,3 +1,4 @@
++#include <cstddef>
+ #include <internal/util/bsd/scoped_ifaddrs.hpp>
+ 
+ using namespace std;
+diff --git a/lib/src/util/posix/scoped_addrinfo.cc b/lib/src/util/posix/scoped_addrinfo.cc
+index 1dc60b4..bf5bf00 100644
+--- a/lib/src/util/posix/scoped_addrinfo.cc
++++ b/lib/src/util/posix/scoped_addrinfo.cc
+@@ -1,3 +1,5 @@
++#include <cstddef>
++
+ #include <internal/util/posix/scoped_addrinfo.hpp>
+ 
+ using namespace std;
+diff --git a/lib/src/util/posix/scoped_bio.cc b/lib/src/util/posix/scoped_bio.cc
+index cdf25d6..dfb7f09 100644
+--- a/lib/src/util/posix/scoped_bio.cc
++++ b/lib/src/util/posix/scoped_bio.cc
+@@ -1,4 +1,5 @@
+ #pragma clang diagnostic ignored "-Wdeprecated-declarations"
++#include <cstddef>
+ #include <internal/util/posix/scoped_bio.hpp>
+ 
+ using namespace std;
+diff --git a/lib/src/util/posix/scoped_descriptor.cc b/lib/src/util/posix/scoped_descriptor.cc
+index 3ba2d4e..7a131d3 100644
+--- a/lib/src/util/posix/scoped_descriptor.cc
++++ b/lib/src/util/posix/scoped_descriptor.cc
+@@ -1,3 +1,4 @@
++#include <cstddef>
+ #include <internal/util/posix/scoped_descriptor.hpp>
+ 
+ using namespace std;
+diff --git a/lib/src/util/scoped_file.cc b/lib/src/util/scoped_file.cc
+index 440d8e3..2369987 100644
+--- a/lib/src/util/scoped_file.cc
++++ b/lib/src/util/scoped_file.cc
+@@ -1,3 +1,4 @@
++#include <cstddef>
+ #include <internal/util/scoped_file.hpp>
+ #include <boost/nowide/cstdio.hpp>
+ 
diff --git a/facter.spec b/facter.spec
index 72717c5..5b60c81 100644
--- a/facter.spec
+++ b/facter.spec
@@ -6,7 +6,7 @@
 
 Name:           facter
 Version:        3.14.7
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Command and ruby library for gathering system information
 
 License:        ASL 2.0
@@ -15,6 +15,7 @@ Source0:        https://downloads.puppetlabs.com/%{name}/%{name}-%{version}.tar.
 Source1:        https://downloads.puppetlabs.com/%{name}/%{name}-%{version}.tar.gz.asc
 Source2:        gpgkey-6F6B15509CF8E59E6E469F327F438280EF8D349F.gpg
 Patch0:         shared_cpp_hcon.patch
+Patch1:         %{name}-gcc11.patch
 
 BuildRequires:  gnupg2
 BuildRequires:  cmake%{?cmake_suffix}
@@ -110,6 +111,9 @@ The ruby bindings for libfacter.
 %ldconfig_scriptlets
 
 %changelog
+* Wed Nov 04 2020 Jeff Law <law@redhat.com> - 3.14.7-4
+- Fix missing #includes for gcc-11
+
 * Mon Jul 27 2020 Fedora Release Engineering <releng@fedoraproject.org> - 3.14.7-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild