diff --git a/debian/control b/debian/control
index 7b72b9eb..4b5038fd 100644
--- a/debian/control
+++ b/debian/control
@@ -8,7 +8,7 @@ Build-Depends: debhelper (>= 9.0), flex, bison, dejagnu, tcl8.5, expect,
     sharutils, autotools-dev (>= 20060702.1), libffi-dev (>= 3.0.9),
     lsb-release, patchutils, diffstat, xz-utils, chrpath, python-dev,
     libedit-dev, swig, python-sphinx, ocaml-nox, binutils-dev, libcloog-isl-dev,
-    libisl-dev
+    libisl-dev (>= 0.11.1
 Build-Conflicts: oprofile, ocaml
 Standards-Version: 3.9.3
 Homepage: http://www.llvm.org/