diff --git a/src/fs/file.rs b/src/fs/file.rs
index 24c72c6..c111e01 100644
--- a/src/fs/file.rs
+++ b/src/fs/file.rs
@@ -114,7 +114,7 @@ impl File {
     pub async fn open<P: AsRef<Path>>(path: P) -> io::Result<File> {
         let path = path.as_ref().to_owned();
         let file = spawn_blocking(move || {
-            std::fs::File::open(&path).context(|| format!("Could not open `{}`", path.display()))
+            std::fs::File::open(&path).context(|| format!("could not open `{}`", path.display()))
         })
         .await?;
         Ok(File::new(file, true))
@@ -153,7 +153,7 @@ impl File {
         let path = path.as_ref().to_owned();
         let file = spawn_blocking(move || {
             std::fs::File::create(&path)
-                .context(|| format!("Could not create `{}`", path.display()))
+                .context(|| format!("could not create `{}`", path.display()))
         })
         .await?;
         Ok(File::new(file, true))
diff --git a/src/io/stdin.rs b/src/io/stdin.rs
index 618393a..369ccae 100644
--- a/src/io/stdin.rs
+++ b/src/io/stdin.rs
@@ -163,7 +163,7 @@ impl Stdin {
             }
         })
         .await
-        .context(|| String::from("Could not read line on stdin"))
+        .context(|| String::from("could not read line on stdin"))
     }
 
     /// Locks this handle to the standard input stream, returning a readable guard.
diff --git a/src/net/udp/mod.rs b/src/net/udp/mod.rs
index e606413..a1ca03f 100644
--- a/src/net/udp/mod.rs
+++ b/src/net/udp/mod.rs
@@ -159,7 +159,7 @@ impl UdpSocket {
                 .poll_write_with(cx, |inner| inner.send_to(buf, &addr))
         })
         .await
-        .context(|| format!("Could not send packet to {}", addr))
+        .context(|| format!("could not send packet to {}", addr))
     }
 
     /// Receives data from the socket.
@@ -190,7 +190,7 @@ impl UdpSocket {
         .context(|| {
             use std::fmt::Write;
 
-            let mut error = String::from("Could not receive data on ");
+            let mut error = String::from("could not receive data on ");
             if let Ok(addr) = self.local_addr() {
                 let _ = write!(&mut error, "{}", addr);
             } else {
@@ -277,7 +277,7 @@ impl UdpSocket {
             .context(|| {
                 use std::fmt::Write;
 
-                let mut error = String::from("Could not send data on ");
+                let mut error = String::from("could not send data on ");
                 if let Ok(addr) = self.local_addr() {
                     let _ = write!(&mut error, "{}", addr);
                 } else {
@@ -312,7 +312,7 @@ impl UdpSocket {
             .context(|| {
                 use std::fmt::Write;
 
-                let mut error = String::from("Could not receive data on ");
+                let mut error = String::from("could not receive data on ");
                 if let Ok(addr) = self.local_addr() {
                     let _ = write!(&mut error, "{}", addr);
                 } else {