diff --git a/configure.ac b/configure.ac
index fa50756..e04891f 100755
--- a/configure.ac
+++ b/configure.ac
@@ -158,7 +158,7 @@
     have_cpp="yes"
   fi
 
-  AX_LIB_EVENT([1.0])
+  AX_LIB_EVENT([2.0])
   have_libevent=$success
 
   AX_LIB_ZLIB([1.2.3])