diff --git a/README b/README
index 391322110..4d7e949d1 100644
--- a/README
+++ b/README
@@ -10,6 +10,7 @@ REQUIREMENTS
 Clutter currently requires:
 
   • GLib >= 2.18.0
+  • Atk >= 1.17
   • Cairo >= 1.6
   • PangoCairo >= 1.20
   • OpenGL >= 1.3 or 1.2+multitexturing, OpenGL ES 1.1 or OpenGL ES 2.0
diff --git a/configure.ac b/configure.ac
index 5b107d8e7..ae51c0d57 100644
--- a/configure.ac
+++ b/configure.ac
@@ -793,7 +793,7 @@ AS_IF([test "x$enable_maintainer_flags" = "xyes" && test "x$GCC" = "xyes"],
 AC_SUBST(MAINTAINER_CFLAGS)
 
 dnl === Dependencies, compiler flags and linker libraries =====================
-CLUTTER_REQUIRES="cairo >= 1.4 pangocairo >= 1.20 $IMAGE_PC_FILES $BACKEND_PC_FILES $JSON_GLIB_PC"
+CLUTTER_REQUIRES="cairo >= 1.4 atk >= 1.7 pangocairo >= 1.20 $IMAGE_PC_FILES $BACKEND_PC_FILES $JSON_GLIB_PC"
 
 PKG_CHECK_MODULES(CLUTTER_DEPS, [$CLUTTER_REQUIRES])