diff --git a/Cargo.toml b/Cargo.toml
index d344e4a..055ce3f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ edition = "2018"
 travis-ci = { repository = "daa84/neovim-lib", branch = "master"  }
 
 [dependencies]
-rmpv = { version ="0.4", features=["with-serde"] }
+rmpv = { version ="1.3.1", features=["with-serde"] }
 log = "0.4"
 
 [target.'cfg(unix)'.dependencies]
diff --git a/src/rpc/mod.rs b/src/rpc/mod.rs
index 8d1aff0..a099e86 100644
--- a/src/rpc/mod.rs
+++ b/src/rpc/mod.rs
@@ -5,5 +5,4 @@ pub mod model;
 pub use self::client::Client;
 pub use self::model::FromVal;
 pub use self::model::IntoVal;
-pub use self::model::RpcMessage;
 pub use rmpv::Value;
diff --git a/tests/lib.rs b/tests/lib.rs
index de1e7f2..a079d15 100644
--- a/tests/lib.rs
+++ b/tests/lib.rs
@@ -76,7 +76,7 @@ fn can_connect_via_unix_socket() {
             }
 
             if one_second <= start.elapsed() {
-                panic!(format!("neovim socket not found at '{:?}'", &socket_path));
+                panic!("neovim socket not found at '{:?}'", &socket_path);
             }
         }
     }
@@ -98,17 +98,17 @@ fn can_connect_via_unix_socket() {
     match servername.as_str() {
         Some(ref name) => {
             if Path::new(name) != socket_path {
-                panic!(format!(
+                panic!(
                     "Server name does not match socket path! {} != {}",
                     name,
                     socket_path.to_str().unwrap()
-                ));
+                );
             }
         }
-        None => panic!(format!(
+        None => panic!(
             "Server name does not match socket path! {:?} != {}",
             servername,
             socket_path.to_str().unwrap()
-        )),
+        ),
     }
 }