diff --git a/.gitignore b/.gitignore
index 895bc9e..e7cb9ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,2 @@
-m4-1.4.14.tar.xz
-m4-1.4.14.tar.xz.sig
-/m4-1.4.15.tar.xz
-/m4-1.4.15.tar.xz.sig
-/m4-1.4.16.tar.xz
-/m4-1.4.16.tar.xz.sig
-/m4-1.4.17.tar.xz
-/m4-1.4.17.tar.xz.sig
+/m4-1.4.18.tar.xz
+/m4-1.4.18.tar.xz.sig
diff --git a/m4-1.4.17-gnulib-ppc64le.patch b/m4-1.4.17-gnulib-ppc64le.patch
deleted file mode 100644
index 698d5f4..0000000
--- a/m4-1.4.17-gnulib-ppc64le.patch
+++ /dev/null
@@ -1,19 +0,0 @@
---- m4-1.4.17/tests/test-isnanl.h.ori
-+++ m4-1.4.17/tests/test-isnanl.h
-@@ -51,6 +51,15 @@ main ()
-   /* A bit pattern that is different from a Quiet NaN.  With a bit of luck,
-      it's a Signalling NaN.  */
-   {
-+#if defined __powerpc__ && LDBL_MANT_DIG == 106
-+    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
-+       represented as the corresponding 64-bit IEEE values in the first double;
-+       the second is ignored.  Manipulate only the first double.  */
-+    #undef NWORDS
-+    #define NWORDS \
-+      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
-+#endif
-+
-     memory_long_double m;
-     m.value = NaNl ();
- # if LDBL_EXPBIT0_BIT > 0
-
diff --git a/m4-1.4.17-perl-make-check.patch b/m4-1.4.17-perl-make-check.patch
deleted file mode 100644
index ae4af40..0000000
--- a/m4-1.4.17-perl-make-check.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -up m4-1.4.17/build-aux/update-copyright.orig m4-1.4.17/build-aux/update-copyright
---- m4-1.4.17/build-aux/update-copyright.orig	2015-07-13 11:25:19.502749690 +0200
-+++ m4-1.4.17/build-aux/update-copyright	2015-07-13 11:26:20.445044297 +0200
-@@ -124,7 +124,7 @@ use strict;
- use warnings;
- 
- my $copyright_re = 'Copyright';
--my $circle_c_re = '(?:\([cC]\)|@copyright{}|©)';
-+my $circle_c_re = '(?:\([cC]\)|@copyright\{}|\\\\\(co|©)';
- my $holder = $ENV{UPDATE_COPYRIGHT_HOLDER};
- $holder ||= 'Free Software Foundation, Inc.';
- my $prefix_max = 5;
diff --git a/m4.spec b/m4.spec
index 57d8025..f8d5b72 100644
--- a/m4.spec
+++ b/m4.spec
@@ -1,17 +1,12 @@
 Summary: The GNU macro processor
 Name: m4
-Version: 1.4.17
-Release: 9%{?dist}
+Version: 1.4.18
+Release: 1%{?dist}
 License: GPLv3+
 Group: Applications/Text
 Source0: http://ftp.gnu.org/gnu/m4/m4-%{version}.tar.xz
 Source1: http://ftp.gnu.org/gnu/m4/m4-%{version}.tar.xz.sig
 URL: http://www.gnu.org/software/m4/
-# Patch0: Fixes math tests for little-endian PowerPC, rhbz#1083434
-#         patch by Menanteau Guy and Ulrich Weigand
-Patch0: m4-1.4.17-gnulib-ppc64le.patch
-# Patch1: Fixes FTBFS, already upstream
-Patch1: m4-1.4.17-perl-make-check.patch
 Requires(post): /sbin/install-info
 Requires(preun): /sbin/install-info
 BuildRequires: autoconf automake
@@ -34,8 +29,6 @@ Install m4 if you need a macro processor.
 
 %prep
 %setup -q
-%patch0 -p1 -b .gnulib-ppc64le
-%patch1 -p1 -b .perl-make-check
 chmod 644 COPYING
 
 %build
@@ -69,6 +62,10 @@ if [ "$1" = 0 ]; then
 fi
 
 %changelog
+* Mon Jan 02 2017 Vitezslav Crhonek <vcrhonek@redhat.com> - 1.4.18-1
+- Update to m4-1.4.18
+  Resolves: #1409340
+
 * Thu Feb 04 2016 Fedora Release Engineering <releng@fedoraproject.org> - 1.4.17-9
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild
 
diff --git a/sources b/sources
index f6149f1..d65b454 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-12a3c829301a4fd6586a57d3fcf196dc  m4-1.4.17.tar.xz
-5e527428642699b78076bf14c1857331  m4-1.4.17.tar.xz.sig
+SHA512 (m4-1.4.18.tar.xz) = 06f583efc3855cd8477d8347544f4ae5153a3e50aea74d21968afa7214784ea3ddfc02d0a2b11324120d76a19f2e804d20de11a456b5da929eb6ae469519b174
+SHA512 (m4-1.4.18.tar.xz.sig) = effc857a19f1496d6dde2887c0314b37d4b142a435e77614936c730878c798491ad93b28860dddd2601f99a43fa41923729b961004faafc6f798f7bc1842f980