diff --git a/Cargo.toml b/Cargo.toml
index 79780f9..60eadd3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ once_cell = "1.8.0"
 unicode-width = "0.1.9"
 
 owo-colors = { version = "3.0.0", optional = true }
-is-terminal = { version = "0.4.1", optional = true }
+is-terminal = { version = "0.4.0", optional = true }
 textwrap = { version = "0.15.0", optional = true }
 supports-hyperlinks = { git = "https://github.com/Porges/supports-hyperlinks", optional = true }
 supports-color = { git = "https://github.com/zkat/supports-color", optional = true }
diff --git a/src/handler.rs b/src/handler.rs
index 09545ce..e983a55 100644
--- a/src/handler.rs
+++ b/src/handler.rs
@@ -191,7 +191,9 @@ impl MietteHandlerOpts {
             let characters = match self.unicode {
                 Some(true) => ThemeCharacters::unicode(),
                 Some(false) => ThemeCharacters::ascii(),
-                None if supports_unicode::on(&std::io::stderr()) => ThemeCharacters::unicode(),
+                None if supports_unicode::on(supports_unicode::Stream::Stderr) => {
+                    ThemeCharacters::unicode()
+                }
                 None => ThemeCharacters::ascii(),
             };
             let styles = if self.color == Some(false) {
@@ -255,7 +257,7 @@ impl MietteHandlerOpts {
         if let Some(linkify) = self.linkify {
             linkify
         } else {
-            supports_hyperlinks::on(&std::io::stderr())
+            supports_hyperlinks::on(supports_hyperlinks::Stream::Stderr)
         }
     }