diff --git a/crates/platform-tags/src/lib.rs b/crates/platform-tags/src/lib.rs
index 72f19ba7d..6bbd4c285 100644
--- a/crates/platform-tags/src/lib.rs
+++ b/crates/platform-tags/src/lib.rs
@@ -1,5 +1,6 @@
 use std::num::NonZeroU32;
 use std::str::FromStr;
+use std::sync::Arc;
 
 use rustc_hash::FxHashMap;
 
@@ -24,7 +25,8 @@ pub enum TagsError {
 #[derive(Debug, Clone)]
 pub struct Tags {
     /// python_tag |--> abi_tag |--> platform_tag |--> priority
-    map: FxHashMap<String, FxHashMap<String, FxHashMap<String, TagPriority>>>,
+    #[allow(clippy::type_complexity)]
+    map: Arc<FxHashMap<String, FxHashMap<String, FxHashMap<String, TagPriority>>>>,
 }
 
 impl Tags {
@@ -42,7 +44,7 @@ impl Tags {
                 .entry(platform.to_string())
                 .or_insert(TagPriority::try_from(index).expect("valid tag priority"));
         }
-        Self { map }
+        Self { map: Arc::new(map) }
     }
 
     /// Returns the compatible tags for the given Python implementation (e.g., `cpython`), version,