diff --git a/src/core.rs b/src/core.rs
index 27bf0d3c..ed217166 100644
--- a/src/core.rs
+++ b/src/core.rs
@@ -476,6 +476,30 @@ impl<S: Into<String>> From<S> for EitherSide {
     }
 }
 
+#[derive(PartialEq, Eq, Clone, Debug, Deserialize, Serialize, derive_more::Display)]
+#[display(fmt = "{}-{}", "&*_0[0]", "&*_0[1]")]
+pub struct ClientVersion(pub [String; 2]);
+
+impl ClientVersion {
+    pub fn new(name: String, version: String) -> Self {
+        let array = [name, version];
+        ClientVersion { 0: array }
+    }
+}
+
+impl std::ops::Deref for ClientVersion {
+    type Target = [String; 2];
+    fn deref(&self) -> &[String; 2] {
+        &self.0
+    }
+}
+
+impl std::ops::DerefMut for ClientVersion {
+    fn deref_mut(&mut self) -> &mut [String; 2] {
+        &mut self.0
+    }
+}
+
 #[derive(PartialEq, Eq, Clone, Debug, Hash, Deserialize, Serialize, derive_more::Display)]
 #[serde(transparent)]
 pub struct Phase(pub Cow<'static, str>);
diff --git a/src/core/server_messages.rs b/src/core/server_messages.rs
index d0fa5264..7a85f2a6 100644
--- a/src/core/server_messages.rs
+++ b/src/core/server_messages.rs
@@ -1,4 +1,4 @@
-use super::{AppID, Mailbox, Mood, MySide, Nameplate, Phase, TheirSide};
+use super::{AppID, ClientVersion, Mailbox, Mood, MySide, Nameplate, Phase, TheirSide};
 use serde_derive::{Deserialize, Serialize};
 use std::collections::HashMap;
 
@@ -135,10 +135,16 @@ impl EncryptedMessage {
 pub enum OutboundMessage {
     #[display(fmt = "SubmitPermission({})", _0)]
     SubmitPermission(SubmitPermission),
-    #[display(fmt = "Bind {{ appid: {}, side: {} }}", appid, side)]
+    #[display(
+        fmt = "Bind {{ appid: {}, side: {}, client_version: {} }}",
+        appid,
+        side,
+        client_version
+    )]
     Bind {
         appid: AppID,
         side: MySide,
+        client_version: ClientVersion,
     },
     List,
     Allocate,
@@ -177,7 +183,14 @@ pub enum OutboundMessage {
 
 impl OutboundMessage {
     pub fn bind(appid: AppID, side: MySide) -> Self {
-        OutboundMessage::Bind { appid, side }
+        let client_name: String = String::from("rust");
+        let client_version_string: String = String::from(env!("CARGO_PKG_VERSION"));
+        let client_version = ClientVersion::new(client_name, client_version_string);
+        OutboundMessage::Bind {
+            appid,
+            side,
+            client_version,
+        }
     }
 
     pub fn claim(nameplate: impl Into<String>) -> Self {
@@ -254,9 +267,11 @@ pub enum InboundMessage {
 mod test {
     use super::*;
     use serde_json::{from_str, json, Value};
+    use std::ops::Deref;
 
     #[test]
     fn test_bind() {
+        let client_version_string: String = String::from(env!("CARGO_PKG_VERSION"));
         let m1 = OutboundMessage::bind(
             AppID::new("appid"),
             MySide::unchecked_from_string(String::from("side1")),
@@ -266,10 +281,27 @@ mod test {
         assert_eq!(
             m2,
             json!({"type": "bind", "appid": "appid",
-                   "side": "side1"})
+                   "side": "side1", "client_version": ["rust", client_version_string]})
         );
     }
 
+    #[test]
+    fn test_client_version_string_rep() {
+        let client_version = ClientVersion::new(String::from("foo"), String::from("1.0.2"));
+
+        assert_eq!(client_version.to_string(), "foo-1.0.2")
+    }
+
+    #[test]
+    fn test_client_version_deref() {
+        let client_version = ClientVersion::new(String::from("bar"), String::from("0.8.9"));
+
+        assert_eq!(
+            client_version.deref(),
+            &[String::from("bar"), String::from("0.8.9")]
+        )
+    }
+
     #[test]
     fn test_list() {
         let m1 = OutboundMessage::List;