diff --git a/ChangeLog b/ChangeLog
index 68cdd98af5..f2352eca86 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Dec 21 01:21:49 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
+
+	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLContext.build):
+	  enable CRL checking by default.
+
 Fri Dec 21 01:20:56 2007  GOTOU Yuuzou  <gotoyuzo@notwork.org>
 
 	* lib/net/http.rb (Net::HTTP#connect): use
diff --git a/ext/openssl/lib/openssl/ssl.rb b/ext/openssl/lib/openssl/ssl.rb
index 3a4735ff77..71726801c0 100644
--- a/ext/openssl/lib/openssl/ssl.rb
+++ b/ext/openssl/lib/openssl/ssl.rb
@@ -37,6 +37,9 @@ module OpenSSL
             unless ctx.ca_file or ctx.ca_path or
                      ctx.cert_store or ctx.verify_callback
               ctx.cert_store = OpenSSL::X509::Store.new
+              if defined?(OpenSSL::X509::V_FLAG_CRL_CHECK_ALL)
+                ctx.cert_store.flags = OpenSSL::X509::V_FLAG_CRL_CHECK_ALL
+              end
               ctx.cert_store.set_default_paths
             end
           end