diff --git a/crates/uv-resolver/src/resolution.rs b/crates/uv-resolver/src/resolution.rs
index 7edf9c4ef..95e44d818 100644
--- a/crates/uv-resolver/src/resolution.rs
+++ b/crates/uv-resolver/src/resolution.rs
@@ -2,6 +2,7 @@ use std::borrow::Cow;
 use std::hash::BuildHasherDefault;
 
 use anyhow::Result;
+use cache_key::CanonicalUrl;
 use dashmap::DashMap;
 use itertools::Itertools;
 use owo_colors::OwoColorize;
@@ -68,7 +69,7 @@ impl ResolutionGraph {
         pins: &FilePins,
         packages: &OnceMap<PackageName, VersionsResponse>,
         distributions: &OnceMap<PackageId, Metadata23>,
-        redirects: &DashMap<Url, Url>,
+        redirects: &DashMap<CanonicalUrl, Url>,
         state: &State<UvDependencyProvider>,
         preferences: &Preferences,
         editables: Editables,
@@ -119,7 +120,7 @@ impl ResolutionGraph {
                     let pinned_package = if let Some((editable, _)) = editables.get(package_name) {
                         Dist::from_editable(package_name.clone(), editable.clone())?
                     } else {
-                        let url = redirects.get(url).map_or_else(
+                        let url = redirects.get(&CanonicalUrl::new(url)).map_or_else(
                             || url.clone(),
                             |precise| apply_redirect(url, precise.value()),
                         );
@@ -224,7 +225,7 @@ impl ResolutionGraph {
                                 .or_insert_with(Vec::new)
                                 .push(extra.clone());
                         } else {
-                            let url = redirects.get(url).map_or_else(
+                            let url = redirects.get(&CanonicalUrl::new(url)).map_or_else(
                                 || url.clone(),
                                 |precise| apply_redirect(url, precise.value()),
                             );
diff --git a/crates/uv-resolver/src/resolver/index.rs b/crates/uv-resolver/src/resolver/index.rs
index 9a2f45914..64692032a 100644
--- a/crates/uv-resolver/src/resolver/index.rs
+++ b/crates/uv-resolver/src/resolver/index.rs
@@ -1,3 +1,4 @@
+use cache_key::CanonicalUrl;
 use dashmap::DashMap;
 use url::Url;
 
@@ -21,5 +22,5 @@ pub struct InMemoryIndex {
     /// A map from source URL to precise URL. For example, the source URL
     /// `git+https://github.com/pallets/flask.git` could be redirected to
     /// `git+https://github.com/pallets/flask.git@c2f65dd1cfff0672b902fd5b30815f0b4137214c`.
-    pub(crate) redirects: DashMap<Url, Url>,
+    pub(crate) redirects: DashMap<CanonicalUrl, Url>,
 }
diff --git a/crates/uv-resolver/src/resolver/mod.rs b/crates/uv-resolver/src/resolver/mod.rs
index 8f0973dd1..0fc4ce11c 100644
--- a/crates/uv-resolver/src/resolver/mod.rs
+++ b/crates/uv-resolver/src/resolver/mod.rs
@@ -6,6 +6,7 @@ use std::ops::Deref;
 use std::sync::Arc;
 
 use anyhow::Result;
+use cache_key::CanonicalUrl;
 use dashmap::{DashMap, DashSet};
 use futures::{FutureExt, StreamExt};
 use itertools::Itertools;
@@ -949,13 +950,19 @@ impl<
                     if let Some(precise) = precise {
                         match distribution {
                             SourceDist::DirectUrl(sdist) => {
-                                self.index.redirects.insert(sdist.url.to_url(), precise);
+                                self.index
+                                    .redirects
+                                    .insert(CanonicalUrl::new(&sdist.url), precise);
                             }
                             SourceDist::Git(sdist) => {
-                                self.index.redirects.insert(sdist.url.to_url(), precise);
+                                self.index
+                                    .redirects
+                                    .insert(CanonicalUrl::new(&sdist.url), precise);
                             }
                             SourceDist::Path(sdist) => {
-                                self.index.redirects.insert(sdist.url.to_url(), precise);
+                                self.index
+                                    .redirects
+                                    .insert(CanonicalUrl::new(&sdist.url), precise);
                             }
                             SourceDist::Registry(_) => {}
                         }