diff --git a/include/libgourou.h b/include/libgourou.h
index 2aa6017..4d482cb 100644
--- a/include/libgourou.h
+++ b/include/libgourou.h
@@ -40,6 +40,8 @@
 #define ACS_SERVER              "http://adeactivate.adobe.com/adept"
 #endif
 
+#define LIBGOUROU_VERSION       "0.1"
+
 namespace gourou
 {
     /**
@@ -49,6 +51,8 @@ namespace gourou
     {
     public:
 
+	static const std::string VERSION;
+
 	/**
 	 * @brief Main constructor. To be used once all is configured (user has signedIn, device is activated)
 	 *
diff --git a/src/libgourou.cpp b/src/libgourou.cpp
index 54ab1f7..8c100a8 100644
--- a/src/libgourou.cpp
+++ b/src/libgourou.cpp
@@ -35,7 +35,8 @@
 namespace gourou
 {
     GOUROU_LOG_LEVEL logLevel = WARN;
-
+    const std::string DRMProcessor::VERSION = LIBGOUROU_VERSION;
+    
     DRMProcessor::DRMProcessor(DRMProcessorClient* client):client(client), device(0), user(0)
     {
 	if (!client)
diff --git a/utils/acsmdownloader.cpp b/utils/acsmdownloader.cpp
index 3c7a608..ddc3dcb 100644
--- a/utils/acsmdownloader.cpp
+++ b/utils/acsmdownloader.cpp
@@ -127,6 +127,11 @@ static const char* findFile(const char* filename, bool inDefaultDirs=true)
     return 0;
 }
 
+static void version(void)
+{
+    std::cout << "Current libgourou version : " << gourou::DRMProcessor::VERSION << std::endl ;
+}
+
 static void usage(const char* cmd)
 {
     std::cout << "Download EPUB file from ACSM request file" << std::endl;
@@ -140,6 +145,7 @@ static void usage(const char* cmd)
     std::cout << "  " << "-o|--output-file"     << "\t"   << "Optional output epub filename (default <title.epub>)" << std::endl;
     std::cout << "  " << "-f|--acsm-file"       << "\t"   << "ACSM request file for epub download" << std::endl;
     std::cout << "  " << "-v|--verbose"         << "\t\t" << "Increase verbosity, can be set multiple times" << std::endl;
+    std::cout << "  " << "-V|--version"         << "\t\t" << "Display libgourou version" << std::endl;
     std::cout << "  " << "-h|--help"            << "\t\t" << "This help" << std::endl;
 
     std::cout << std::endl;
@@ -167,11 +173,12 @@ int main(int argc, char** argv)
 	    {"output-file",      required_argument, 0,  'o' },
 	    {"acsm-file",        required_argument, 0,  'f' },
 	    {"verbose",          no_argument,       0,  'v' },
+	    {"version",          no_argument,       0,  'V' },
 	    {"help",             no_argument,       0,  'h' },
 	    {0,                  0,                 0,  0 }
 	};
 
-	c = getopt_long(argc, argv, "d:a:k:O:o:f:vh",
+	c = getopt_long(argc, argv, "d:a:k:O:o:f:vVh",
                         long_options, &option_index);
 	if (c == -1)
 	    break;
@@ -198,10 +205,12 @@ int main(int argc, char** argv)
 	case 'v':
 	    verbose++;
 	    break;
+	case 'V':
+	    version();
+	    return 0;
 	case 'h':
 	    usage(argv[0]);
 	    return 0;
-	    break;
 	default:
 	    usage(argv[0]);
 	    return -1;
diff --git a/utils/activate.cpp b/utils/activate.cpp
index c089ec1..641a38f 100644
--- a/utils/activate.cpp
+++ b/utils/activate.cpp
@@ -134,6 +134,11 @@ private:
     QCoreApplication* app;
 };	      
 
+static void version(void)
+{
+    std::cout << "Current libgourou version : " << gourou::DRMProcessor::VERSION << std::endl ;
+}
+
 static void usage(const char* cmd)
 {
     std::cout << "Create new device files used by ADEPT DRM" << std::endl;
@@ -146,6 +151,7 @@ static void usage(const char* cmd)
     std::cout << "  " << "-H|--hobbes-version" << "\t"<< "Force RMSDK version to a specific value (default: version of current librmsdk)" << std::endl;
     std::cout << "  " << "-r|--random-serial" << "\t"<< "Generate a random device serial (if not set, it will be dependent of your current configuration)" << std::endl;
     std::cout << "  " << "-v|--verbose"    << "\t\t" << "Increase verbosity, can be set multiple times" << std::endl;
+    std::cout << "  " << "-V|--version"         << "\t\t" << "Display libgourou version" << std::endl;
     std::cout << "  " << "-h|--help"       << "\t\t" << "This help" << std::endl;
 
     std::cout << std::endl;
@@ -177,11 +183,12 @@ int main(int argc, char** argv)
 	    {"hobbes-version",required_argument, 0,  'H' },
 	    {"random-serial", no_argument,       0,  'r' },
 	    {"verbose",       no_argument,       0,  'v' },
+	    {"version",          no_argument,       0,  'V' },
 	    {"help",          no_argument,       0,  'h' },
 	    {0,               0,                 0,  0 }
 	};
 
-	c = getopt_long(argc, argv, "u:p:O:H:rvh",
+	c = getopt_long(argc, argv, "u:p:O:H:rvVh",
                         long_options, &option_index);
 	if (c == -1)
 	    break;
@@ -202,10 +209,12 @@ int main(int argc, char** argv)
 	case 'v':
 	    verbose++;
 	    break;
+	case 'V':
+	    version();
+	    return 0;
 	case 'h':
 	    usage(argv[0]);
 	    return 0;
-	    break;
 	case 'r':
 	    randomSerial = true;
 	    break;