diff --git a/debian/changelog b/debian/changelog
index d600f157..2a604345 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,5 +1,7 @@
 llvm-toolchain-7 (1:7~+rc1-1~exp4) UNRELEASED; urgency=medium
 
+  * Force sphinx to be >> 1.2.3
+
   [ John Paul Adrian Glaubitz ]
   * Don't build with ld.gold on powerpcspe
   * Disable polly on powerpcspe
@@ -8,7 +10,7 @@ llvm-toolchain-7 (1:7~+rc1-1~exp4) UNRELEASED; urgency=medium
   [ Gianfranco Costamagna ]
   * Enable lld on ppc64el
 
- -- John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>  Tue, 21 Aug 2018 23:50:12 +0200
+ -- Sylvestre Ledru <sylvestre@debian.org>  Fri, 24 Aug 2018 15:19:54 +0200
 
 llvm-toolchain-7 (1:7~+rc1-1~exp3) experimental; urgency=medium
 
diff --git a/debian/control b/debian/control
index 93eff2b7..2d7d23c9 100644
--- a/debian/control
+++ b/debian/control
@@ -6,7 +6,8 @@ Uploaders: Sylvestre Ledru <sylvestre@debian.org>
 Build-Depends: debhelper (>= 9.0), flex, bison, dejagnu, tcl, expect,
     cmake, perl, libtool, chrpath, texinfo, sharutils, libffi-dev (>= 3.0.9),
     lsb-release, patchutils, diffstat, xz-utils, python-dev,
-    libedit-dev, libncurses5-dev, swig, python-six, python-sphinx, binutils-dev,
+    libedit-dev, libncurses5-dev, swig, python-six, python-sphinx (>> 1.2.3),
+    binutils-dev,
     libjsoncpp-dev, pkg-config,
     lcov, procps, help2man, zlib1g-dev,
     g++-multilib [amd64 i386 kfreebsd-amd64 mips mips64 mips64el mipsel powerpc ppc64 s390 s390x sparc sparc64 x32],