diff --git a/crates/uv-resolver/src/pubgrub/package.rs b/crates/uv-resolver/src/pubgrub/package.rs
index 5502948c264f..c631d4403727 100644
--- a/crates/uv-resolver/src/pubgrub/package.rs
+++ b/crates/uv-resolver/src/pubgrub/package.rs
@@ -196,13 +196,13 @@ impl std::fmt::Display for PubGrubPackageInner {
                 name,
                 extra: None,
                 marker: None,
-                ..
+                dev: None,
             } => write!(f, "{name}"),
             Self::Package {
                 name,
                 extra: Some(extra),
                 marker: None,
-                ..
+                dev: None,
             } => {
                 write!(f, "{name}[{extra}]")
             }
@@ -210,19 +210,40 @@ impl std::fmt::Display for PubGrubPackageInner {
                 name,
                 extra: None,
                 marker: Some(marker),
-                ..
+                dev: None,
             } => write!(f, "{name}{{{marker}}}"),
             Self::Package {
                 name,
                 extra: Some(extra),
                 marker: Some(marker),
-                ..
+                dev: None,
             } => {
                 write!(f, "{name}[{extra}]{{{marker}}}")
             }
+            Self::Package {
+                name,
+                extra: None,
+                marker: None,
+                dev: Some(dev),
+            } => write!(f, "{name}:{dev}"),
+            Self::Package {
+                name,
+                extra: None,
+                marker: Some(marker),
+                dev: Some(dev),
+            } => {
+                write!(f, "{name}[{dev}]{{{marker}}}")
+            }
             Self::Marker { name, marker, .. } => write!(f, "{name}{{{marker}}}"),
             Self::Extra { name, extra, .. } => write!(f, "{name}[{extra}]"),
             Self::Dev { name, dev, .. } => write!(f, "{name}:{dev}"),
+            // It is guaranteed that `extra` and `dev` are never set at the same time.
+            Self::Package {
+                name: _,
+                extra: Some(_),
+                marker: _,
+                dev: Some(_),
+            } => unreachable!(),
         }
     }
 }
diff --git a/crates/uv/tests/workspace.rs b/crates/uv/tests/workspace.rs
index d5f4a45e22ad..76acda86cf95 100644
--- a/crates/uv/tests/workspace.rs
+++ b/crates/uv/tests/workspace.rs
@@ -1439,7 +1439,7 @@ fn workspace_unsatisfiable_member_dependencies_conflicting_dev() -> Result<()> {
     ----- stderr -----
     Using Python 3.12.[X] interpreter at: [PYTHON-3.12]
       × No solution found when resolving dependencies:
-      ╰─▶ Because bar depends on bar:dev and bar depends on anyio==4.2.0, we can conclude that bar depends on anyio==4.2.0.
+      ╰─▶ Because bar depends on bar:dev and bar:dev depends on anyio==4.2.0, we can conclude that bar depends on anyio==4.2.0.
           And because foo depends on anyio==4.1.0, we can conclude that bar and foo are incompatible.
           And because your workspace requires bar and foo, we can conclude that your workspace's requirements are unsatisfiable.
     "###