diff --git a/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/ServiceLocator.java b/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/ServiceLocator.java
index 8cf8236..3d22c75 100644
--- a/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/ServiceLocator.java
+++ b/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/ServiceLocator.java
@@ -238,7 +238,12 @@
 
 	public static Map<String, String> computeDefaultRequestMetaParameters() {
 		Map<String, String> requestMetaParameters = new HashMap<String, String>();
+
 		requestMetaParameters.put(DefaultMarketplaceService.META_PARAM_CLIENT, MarketplaceClientCore.BUNDLE_ID);
+		Bundle clientBundle = Platform.getBundle(MarketplaceClientCore.BUNDLE_ID);
+		requestMetaParameters.put(DefaultMarketplaceService.META_PARAM_CLIENT_VERSION, clientBundle.getVersion()
+				.toString());
+
 		requestMetaParameters.put(DefaultMarketplaceService.META_PARAM_OS, Platform.getOS());
 		requestMetaParameters.put(DefaultMarketplaceService.META_PARAM_WS, Platform.getWS());
 		requestMetaParameters.put(DefaultMarketplaceService.META_PARAM_NL, Platform.getNL());
diff --git a/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/service/DefaultMarketplaceService.java b/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/service/DefaultMarketplaceService.java
index e4c77c2..a784855 100644
--- a/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/service/DefaultMarketplaceService.java
+++ b/org.eclipse.epp.mpc.core/src/org/eclipse/epp/internal/mpc/core/service/DefaultMarketplaceService.java
@@ -103,6 +103,13 @@
 	public static final String META_PARAM_CLIENT = "client"; //$NON-NLS-1$
 
 	/**
+	 * parameter identifying client plugin version
+	 *
+	 * @see {@link #setRequestMetaParameters(Map)}
+	 */
+	public static final String META_PARAM_CLIENT_VERSION = "client.version"; //$NON-NLS-1$
+
+	/**
 	 * parameter identifying windowing system as reported by {@link org.eclipse.core.runtime.Platform#getWS()}
 	 *
 	 * @see {@link #setRequestMetaParameters(Map)}