diff --git a/Cargo.lock b/Cargo.lock
index 19566366f59..eb5d192abb3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -132,9 +132,9 @@ dependencies = [
 
 [[package]]
 name = "cargo_metadata"
-version = "0.14.2"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4acbb09d9ee8e23699b9634375c72795d095bf268439da88562cf9b501f181fa"
+checksum = "3abb7553d5b9b8421c6de7cb02606ff15e0c6eea7d8eadd75ef013fd636bec36"
 dependencies = [
  "camino",
  "cargo-platform",
diff --git a/crates/flycheck/Cargo.toml b/crates/flycheck/Cargo.toml
index 1fb4f70006b..d3d180ece51 100644
--- a/crates/flycheck/Cargo.toml
+++ b/crates/flycheck/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 [dependencies]
 crossbeam-channel = "0.5.5"
 tracing = "0.1.35"
-cargo_metadata = "0.14.2"
+cargo_metadata = "0.15.0"
 serde = { version = "1.0.137", features = ["derive"] }
 serde_json = "1.0.81"
 jod-thread = "0.1.2"
diff --git a/crates/proc-macro-test/Cargo.toml b/crates/proc-macro-test/Cargo.toml
index 872b2a99d84..684477191b2 100644
--- a/crates/proc-macro-test/Cargo.toml
+++ b/crates/proc-macro-test/Cargo.toml
@@ -12,4 +12,4 @@ doctest = false
 [build-dependencies]
 proc-macro-test-impl = { path = "imp", version = "0.0.0" }
 toolchain = { path = "../toolchain", version = "0.0.0" }
-cargo_metadata = "0.14.2"
+cargo_metadata = "0.15.0"
diff --git a/crates/project-model/Cargo.toml b/crates/project-model/Cargo.toml
index 35465d0861f..84b239b3e29 100644
--- a/crates/project-model/Cargo.toml
+++ b/crates/project-model/Cargo.toml
@@ -12,7 +12,7 @@ doctest = false
 [dependencies]
 tracing = "0.1.35"
 rustc-hash = "1.1.0"
-cargo_metadata = "0.14.2"
+cargo_metadata = "0.15.0"
 semver = "1.0.10"
 serde = { version = "1.0.137", features = ["derive"] }
 serde_json = "1.0.81"
diff --git a/crates/project-model/src/cargo_workspace.rs b/crates/project-model/src/cargo_workspace.rs
index 76ef44e1471..597880c2ca2 100644
--- a/crates/project-model/src/cargo_workspace.rs
+++ b/crates/project-model/src/cargo_workspace.rs
@@ -318,10 +318,15 @@ pub fn new(mut meta: cargo_metadata::Metadata) -> CargoWorkspace {
                 ..
             } = meta_pkg;
             let meta = from_value::<PackageMetadata>(metadata.clone()).unwrap_or_default();
-            let edition = edition.parse::<Edition>().unwrap_or_else(|err| {
-                tracing::error!("Failed to parse edition {}", err);
-                Edition::CURRENT
-            });
+            let edition = match edition {
+                cargo_metadata::Edition::E2015 => Edition::Edition2015,
+                cargo_metadata::Edition::E2018 => Edition::Edition2018,
+                cargo_metadata::Edition::E2021 => Edition::Edition2021,
+                _ => {
+                    tracing::error!("Unsupported edition `{:?}`", edition);
+                    Edition::CURRENT
+                }
+            };
             // We treat packages without source as "local" packages. That includes all members of
             // the current workspace, as well as any path dependency outside the workspace.
             let is_local = meta_pkg.source.is_none();