diff --git a/configure.ac b/configure.ac
index d565e070..f231323c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -89,7 +89,7 @@ XORG_DRIVER_CHECK_EXT(DPMSExtension, xextproto)
 
 # Checks for pkg-config packages
 PKG_CHECK_MODULES(XORG, [xorg-server >= 1.6 xproto fontsproto $REQUIRED_MODULES])
-PKG_CHECK_MODULES(DRM, [libdrm >= 2.4.19])
+PKG_CHECK_MODULES(DRM, [libdrm >= 2.4.21])
 PKG_CHECK_MODULES(PCIACCESS, [pciaccess >= 0.10])
 PKG_CHECK_MODULES(XEXT, [xextproto >= 7.0.99.1],
                   HAVE_XEXTPROTO_71="yes"; AC_DEFINE(HAVE_XEXTPROTO_71, 1, [xextproto 7.1 available]),