diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7402244b..fe059292 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -48,7 +48,7 @@ find_package(PythonInterp)
 
 # Auto-detection of features that can be toggled
 find_package(OpenSSL 1.0.1)
-find_package(Libev 4.15)
+find_package(Libev 4.11)
 find_package(ZLIB 1.2.3)
 if(OPENSSL_FOUND AND LIBEV_FOUND AND ZLIB_FOUND)
   set(ENABLE_APP_DEFAULT ON)
diff --git a/README.rst b/README.rst
index 290c7dd4..0f05d206 100644
--- a/README.rst
+++ b/README.rst
@@ -63,7 +63,7 @@ To build and run the application programs (``nghttp``, ``nghttpd``,
 are required:
 
 * OpenSSL >= 1.0.1
-* libev >= 4.15
+* libev >= 4.11
 * zlib >= 1.2.3
 
 ALPN support requires OpenSSL >= 1.0.2 (released 22 January 2015).