diff --git a/pcre-8.39-Document-assertion-capture-limitation.patch b/pcre-8.39-Document-assertion-capture-limitation.patch
new file mode 100644
index 0000000..578ed7b
--- /dev/null
+++ b/pcre-8.39-Document-assertion-capture-limitation.patch
@@ -0,0 +1,49 @@
+From ee124b6b235a560fc5bfc18cc27e280af7e021d2 Mon Sep 17 00:00:00 2001
+From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
+Date: Sun, 23 Oct 2016 15:44:15 +0000
+Subject: [PATCH] Document assertion capture limitation.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1671 2f5784b3-3f2a-0410-8824-cb99058d5e15
+Signed-off-by: Petr Písař <ppisar@redhat.com>
+---
+ doc/pcrepattern.3 | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/doc/pcrepattern.3 b/doc/pcrepattern.3
+index 1e25371..c221682 100644
+--- a/doc/pcrepattern.3
++++ b/doc/pcrepattern.3
+@@ -1,4 +1,4 @@
+-.TH PCREPATTERN 3 "14 October 2016" "PCRE 8.40"
++.TH PCREPATTERN 3 "23 October 2016" "PCRE 8.40"
+ .SH NAME
+ PCRE - Perl-compatible regular expressions
+ .SH "PCRE REGULAR EXPRESSION DETAILS"
+@@ -2167,6 +2167,13 @@ numbering the capturing subpatterns in the whole pattern. However, substring
+ capturing is carried out only for positive assertions. (Perl sometimes, but not
+ always, does do capturing in negative assertions.)
+ .P
++WARNING: If a positive assertion containing one or more capturing subpatterns 
++succeeds, but failure to match later in the pattern causes backtracking over 
++this assertion, the captures within the assertion are reset only if no higher 
++numbered captures are already set. This is, unfortunately, a fundamental 
++limitation of the current implementation, and as PCRE1 is now in 
++maintenance-only status, it is unlikely ever to change.
++.P
+ For compatibility with Perl, assertion subpatterns may be repeated; though
+ it makes no sense to assert the same thing several times, the side effect of
+ capturing parentheses may occasionally be useful. In practice, there only three
+@@ -3292,6 +3299,6 @@ Cambridge CB2 3QH, England.
+ .rs
+ .sp
+ .nf
+-Last updated: 14 October 2016
++Last updated: 23 October 2016
+ Copyright (c) 1997-2016 University of Cambridge.
+ .fi
+-- 
+2.7.4
+
diff --git a/pcre.spec b/pcre.spec
index d48ede3..be6e02d 100644
--- a/pcre.spec
+++ b/pcre.spec
@@ -2,7 +2,7 @@
 #%%global rcversion RC1
 Name:       pcre
 Version:    8.39
-Release:    %{?rcversion:0.}5%{?rcversion:.%rcversion}%{?dist}
+Release:    %{?rcversion:0.}6%{?rcversion:.%rcversion}%{?dist}
 %global myversion %{version}%{?rcversion:-%rcversion}
 Summary:    Perl-compatible regular expression library
 Group:      System Environment/Libraries
@@ -59,6 +59,9 @@ Patch8:     pcre-8.39-Fix-documentation-error.patch
 # Fix optimization bugs for patterns starting with lookaheads,
 # in upstream after 8.39, upstream bug #1882
 Patch9:     pcre-8.39-Fix-optimization-bugs-for-patterns-starting-with-loo.patch
+# Document assert capture limitation, in upstream after 8.39,
+# upstream bug #1887
+Patch10:    pcre-8.39-Document-assertion-capture-limitation.patch
 BuildRequires:  readline-devel
 BuildRequires:  autoconf
 BuildRequires:  automake
@@ -156,6 +159,7 @@ Utilities demonstrating PCRE capabilities like pcregrep or pcretest.
 %patch7 -p1
 %patch8 -p1
 %patch9 -p1
+%patch10 -p1
 # Because of rpath patch
 libtoolize --copy --force
 autoreconf -vif
@@ -252,6 +256,9 @@ make %{?_smp_mflags} check VERBOSE=yes
 %{_mandir}/man1/pcretest.*
 
 %changelog
+* Mon Oct 24 2016 Petr Pisar <ppisar@redhat.com> - 8.39-6
+- Document assert capture limitation (upstream bug #1887)
+
 * Wed Oct 19 2016 Petr Pisar <ppisar@redhat.com> - 8.39-5
 - Fix internal option documentation in pcrepattern(3) (upstream bug #1875)
 - Fix optimization bugs for patterns starting with lookaheads