diff --git a/Changes b/Changes
index 59920ce..5479b54 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,9 @@
 Revision history for Perl extension PerlCryptLib
 ================================================
 
+1.11  Sun Oct 24 18:45:21 2010
+	- Added compatibility for deprecated functions removed from cryptlib starting from version 3.4.0
+
 1.10  Sun Apr 18 00:25:33 2010
 	- Done some optimizations in XS code for gcc4 ISO C90 compatibility 
 
diff --git a/PerlCryptLib.pm b/PerlCryptLib.pm
index f93d200..e262c54 100644
--- a/PerlCryptLib.pm
+++ b/PerlCryptLib.pm
@@ -8,7 +8,7 @@ use Carp;
 require Exporter;
 use AutoLoader;
 
-our $VERSION = '1.10';
+our $VERSION = '1.11';
 
 
 #############################################################################
@@ -114,7 +114,7 @@ our $VERSION = '1.10';
 							cryptInit cryptEnd 
 							cryptQueryCapability 
 							cryptCreateContext cryptDestroyContext cryptDestroyObject 
-							cryptGenerateKey cryptGenerateKeyAsync cryptAsyncQuery cryptAsyncCancel 
+							cryptGenerateKey  
 							cryptEncrypt cryptDecrypt 
 							cryptSetAttribute cryptSetAttributeString cryptGetAttribute cryptGetAttributeString cryptDeleteAttribute 
 							cryptAddRandom 
@@ -130,7 +130,8 @@ our $VERSION = '1.10';
 							cryptDeviceOpen cryptDeviceClose cryptDeviceQueryCapability cryptDeviceCreateContext 
 							cryptLogin cryptLogout 
 						);
-
+	# Add deprecated functions when CRYPTLIB_VERSION prior 3.4.0
+	push @FUNCTIONS, qw(cryptGenerateKeyAsync cryptAsyncQuery cryptAsyncCancel) if &CRYPTLIB_VERSION < 3400;
 
 	# Esportazione costanti e funzioni
 	our @ISA = qw(Exporter);
@@ -168,6 +169,8 @@ sub AUTOLOAD {
 
 require XSLoader;
 XSLoader::load('PerlCryptLib', $VERSION);
+## Add deprecated functions if CRYPTLIB_VERSION is less than 3.4.0
+#XSLoader::load('PerlCryptLib-deprecated-340', $VERSION) if &CRYPTLIB_VERSION < 3400;
 
 if ( __FILE__ eq "$0" ) {
 	# TEST PACKAGE SPACE
diff --git a/PerlCryptLib.xs b/PerlCryptLib.xs
index 15815bc..b6229b3 100644
--- a/PerlCryptLib.xs
+++ b/PerlCryptLib.xs
@@ -2,7 +2,7 @@
 
  Perl extesione interface (XS) to 'cryptlib' library (PerlCryptLib)
 
- Copyright (C) 2006-2009 Alvaro Livraghi. All Rights Reserved.
+ Copyright (C) 2006-2010 Alvaro Livraghi. All Rights Reserved.
  Alvaro Livraghi, <perlcryptlib@gmail.com>
 
 *******************************************************************************/
@@ -335,14 +335,6 @@ int cryptAddRandom(randomData, randomDataLength)
 	const int randomDataLength;
 
 
-int cryptAsyncCancel(cryptObject)
-	const int cryptObject;
-
-
-int cryptAsyncQuery(cryptObject)
-	const int cryptObject;
-
-
 int cryptCAAddItem(keyset, certificate)
 	const int keyset;
 	const int certificate;
@@ -549,10 +541,6 @@ int cryptExportKeyEx(encryptedKey, encryptedKeyMaxLength, encryptedKeyLength, fo
 		encryptedKeyLength
 
 
-int cryptGenerateKeyAsync(cryptContext)
-	const int cryptContext;
-
-
 int cryptGetCertExtension(certificate, oid, criticalFlag, extension, extensionMaxLength, extensionLength)
 	const int certificate;
 	const char * oid;
@@ -605,3 +593,19 @@ int cryptQueryObject(objectData, objectDataLength, cryptObjectInfo)
 		}
 	OUTPUT:
 		RETVAL
+
+# Add deprecated functions when CRYPTLIB_VERSION prior 3.4.0
+#if CRYPTLIB_VERSION < 3400
+
+int cryptAsyncCancel(cryptObject)
+	const int cryptObject;
+
+
+int cryptAsyncQuery(cryptObject)
+	const int cryptObject;
+
+
+int cryptGenerateKeyAsync(cryptContext)
+	const int cryptContext;
+
+#endif
diff --git a/README b/README
index 596b585..f345589 100644
--- a/README
+++ b/README
@@ -1,6 +1,4 @@
-============================
-PerlCryptLib v.1.10 - README
-============================
+PerlCryptLib v.1.11 - README
 
 
 What is cryptlib?