diff --git a/giflib.spec b/giflib.spec
index 2649b6f..dce38aa 100644
--- a/giflib.spec
+++ b/giflib.spec
@@ -28,6 +28,7 @@ Source:         http://downloads.sf.net/giflib/%{name}-%{version}.tar.bz2
 Source2:        baselibs.conf
 Patch1:         giflib-visibility.patch
 Patch2:         giflib-automake-1_13.patch
+Patch3:         giflib-CVE-2016-3977.patch
 BuildRequires:  libtool >= 2
 BuildRequires:  xorg-x11-libICE-devel
 BuildRequires:  xorg-x11-libSM-devel
@@ -71,6 +72,7 @@ have expired, giflib can again be used instead of libungif.
 %setup -q
 %patch1 -p1
 %patch2 -p1
+%patch3 -p1
 
 # USE __TIMESTAMP__ instead of __DATE__ , __TIME__
 # this change is pointless unless we preserve the original