diff --git a/CryptX-0.059-remove-buggy-Math-BigInt-related-tests.patch b/CryptX-0.059-remove-buggy-Math-BigInt-related-tests.patch
new file mode 100644
index 0000000..2cac0a2
--- /dev/null
+++ b/CryptX-0.059-remove-buggy-Math-BigInt-related-tests.patch
@@ -0,0 +1,104 @@
+From 9b655434721db4608c403f3ec1bf3ed90d45fb42 Mon Sep 17 00:00:00 2001
+From: Karel Miko <karel.miko@gmail.com>
+Date: Fri, 27 Apr 2018 19:01:54 +0200
+Subject: [PATCH] remove buggy Math::BigInt related tests
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ t/mbi_ltm/bigfltpm.inc | 3 ---
+ t/mbi_ltm/bigintpm.inc | 5 -----
+ t/mbi_ltm_bigfltpm.t   | 2 +-
+ t/mbi_ltm_bigintpm.t   | 2 +-
+ t/mbi_ltm_bugs.t       | 2 +-
+ 5 files changed, 3 insertions(+), 11 deletions(-)
+
+diff --git a/t/mbi_ltm/bigfltpm.inc b/t/mbi_ltm/bigfltpm.inc
+index 10d05137..97e7cdca 100644
+--- a/t/mbi_ltm/bigfltpm.inc
++++ b/t/mbi_ltm/bigfltpm.inc
+@@ -950,9 +950,6 @@ NaN:21:NaN
+ abc:123.456:NaN
+ 123.456:abc:NaN
+ +inf:123.45:inf
+--inf:123.45:-inf
+-+inf:-123.45:inf
+--inf:-123.45:-inf
+ -2:2:4
+ -2:3:-8
+ -2:4:16
+diff --git a/t/mbi_ltm/bigintpm.inc b/t/mbi_ltm/bigintpm.inc
+index 0798e544..35efeca4 100644
+--- a/t/mbi_ltm/bigintpm.inc
++++ b/t/mbi_ltm/bigintpm.inc
+@@ -2651,26 +2651,21 @@ abc:12:NaN
+ +inf:1234500012:inf
+ -inf:1234500012:inf
+ -inf:1234500013:-inf
+-+inf:-12345000123:inf
+--inf:-12345000123:-inf
+ #  -inf * -inf = inf
+ -inf:2:inf
+ -inf:0:NaN
+ -inf:-1:0
+--inf:inf:NaN
+ 2:inf:inf
+ 2:-inf:0
+ 0:inf:0
+ 0:-inf:inf
+ -1:-inf:NaN
+ -1:inf:NaN
+--2:inf:NaN
+ -2:-inf:0
+ NaN:inf:NaN
+ NaN:-inf:NaN
+ -inf:NaN:NaN
+ inf:NaN:NaN
+-inf:-inf:NaN
+ 1:inf:1
+ 1:-inf:1
+ # 1 ** -x => 1 / (1 ** x)
+diff --git a/t/mbi_ltm_bigfltpm.t b/t/mbi_ltm_bigfltpm.t
+index 3540868a..8173e27b 100644
+--- a/t/mbi_ltm_bigfltpm.t
++++ b/t/mbi_ltm_bigfltpm.t
+@@ -7,7 +7,7 @@ use Test::More;
+ 
+ BEGIN {
+     plan skip_all => "requires Math::BigFloat 1.999715+" unless eval { require Math::BigFloat && eval($Math::BigFloat::VERSION) >= 1.999715 };
+-    plan tests => 2409            # tests in require'd file
++    plan tests => 2403            # tests in require'd file
+                   + 5;            # tests in this file
+ }
+ 
+diff --git a/t/mbi_ltm_bigintpm.t b/t/mbi_ltm_bigintpm.t
+index ebb7582e..976e7b1e 100644
+--- a/t/mbi_ltm_bigintpm.t
++++ b/t/mbi_ltm_bigintpm.t
+@@ -7,7 +7,7 @@ use Test::More;
+ 
+ BEGIN {
+   plan skip_all => "requires Math::BigInt 1.999712+" unless eval { require Math::BigInt && eval($Math::BigInt::VERSION) >= 1.999712 };
+-  plan tests => 3722            # tests in require'd file
++  plan tests => 3712            # tests in require'd file
+                  + 6;           # tests in this file
+ }
+ 
+diff --git a/t/mbi_ltm_bugs.t b/t/mbi_ltm_bugs.t
+index ebb7582e..976e7b1e 100644
+--- a/t/mbi_ltm_bugs.t
++++ b/t/mbi_ltm_bugs.t
+@@ -7,7 +7,7 @@ use Test::More;
+ 
+ BEGIN {
+   plan skip_all => "requires Math::BigInt 1.999712+" unless eval { require Math::BigInt && eval($Math::BigInt::VERSION) >= 1.999712 };
+-  plan tests => 3722            # tests in require'd file
++  plan tests => 3712            # tests in require'd file
+                  + 6;           # tests in this file
+ }
+ 
+-- 
+2.14.3
+
diff --git a/perl-CryptX.spec b/perl-CryptX.spec
index a43dff9..86ba2dd 100644
--- a/perl-CryptX.spec
+++ b/perl-CryptX.spec
@@ -5,7 +5,7 @@
 
 Name:           perl-CryptX
 Version:        0.053
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Cryptographic toolkit
 # Other file:   GPL+ or Artistic
 ## Unbundled
@@ -23,6 +23,8 @@ Source0:        http://search.cpan.org/CPAN/authors/id/M/MI/MIK/CryptX-%{version
 Patch0:         CryptX-0.053-Disable-ECC-and-unbundle-libtomcrypt.patch
 # Validate decode_b58b input properly, in upstream 0.058
 Patch1:         CryptX-0.053-bug-decode_b58b-invalid-input.patch
+# Adapt tests to changes in Math::BigInt 1.999813, in upstream 0.060
+Patch2:         CryptX-0.059-remove-buggy-Math-BigInt-related-tests.patch
 BuildRequires:  findutils
 BuildRequires:  gcc
 BuildRequires:  libtomcrypt-devel
@@ -76,6 +78,7 @@ ECC support is disabled because it's not yet fully supported by LibTomCrypt.
 %patch0 -p1
 rm -rf ./src
 %patch1 -p1
+%patch2 -p1
 
 %build
 perl Makefile.PL INSTALLDIRS=vendor NO_PACKLIST=1 OPTIMIZE="$RPM_OPT_FLAGS"
@@ -99,6 +102,9 @@ make test
 %{_mandir}/man3/*
 
 %changelog
+* Thu May 03 2018 Petr Pisar <ppisar@redhat.com> - 0.053-4
+- Adapt tests to changes in Math::BigInt 1.999813
+
 * Thu Mar  1 2018 Florian Weimer <fweimer@redhat.com> - 0.053-3
 - Rebuild with new redhat-rpm-config/perl build flags