diff --git a/src/jsr.rs b/src/jsr.rs
index df91fe0..7508171 100644
--- a/src/jsr.rs
+++ b/src/jsr.rs
@@ -17,7 +17,7 @@ use crate::package::PackageReqReferenceParseError;
 ///
 /// This wraps PackageReqReference in order to prevent accidentally
 /// mixing this with other schemes.
-#[derive(Clone, Debug, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub struct JsrPackageReqReference(PackageReqReference);
 
 impl std::fmt::Display for JsrPackageReqReference {
diff --git a/src/lib.rs b/src/lib.rs
index b1464ba..fb792b3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,7 @@
 
 use std::cmp::Ordering;
 use std::fmt;
+use std::hash::Hash;
 
 use once_cell::sync::Lazy;
 use serde::Deserialize;
@@ -200,12 +201,26 @@ impl RangeSetOrTag {
 }
 
 /// A version constraint.
-#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct VersionReq {
   raw_text: String,
   inner: RangeSetOrTag,
 }
 
+impl PartialEq for VersionReq {
+  fn eq(&self, other: &Self) -> bool {
+    self.inner == other.inner
+  }
+}
+
+impl Eq for VersionReq {}
+
+impl Hash for VersionReq {
+  fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+    self.inner.hash(state);
+  }
+}
+
 impl VersionReq {
   /// Creates a version requirement without examining the raw text.
   pub fn from_raw_text_and_inner(
@@ -333,4 +348,11 @@ mod test {
       assert!(req_star.intersects(&req_gte_1)); // again, '*' allows any version.
     }
   }
+
+  #[test]
+  fn version_req_eq() {
+    let p1 = VersionReq::parse_from_specifier("1").unwrap();
+    let p2 = VersionReq::parse_from_specifier("1.x").unwrap();
+    assert_eq!(p1, p2);
+  }
 }
diff --git a/src/npm.rs b/src/npm.rs
index 7782ed7..836a9ad 100644
--- a/src/npm.rs
+++ b/src/npm.rs
@@ -438,7 +438,7 @@ fn part(input: &str) -> ParseResult<&str> {
 ///
 /// This wraps PackageReqReference in order to prevent accidentally
 /// mixing this with other schemes.
-#[derive(Clone, Debug, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub struct NpmPackageReqReference(PackageReqReference);
 
 impl std::fmt::Display for NpmPackageReqReference {
diff --git a/src/package.rs b/src/package.rs
index 8f94ede..6a84a2c 100644
--- a/src/package.rs
+++ b/src/package.rs
@@ -58,7 +58,7 @@ pub struct PackageReqReferenceInvalidWithVersionParseError {
 ///
 /// This contains all the information found in a package specifier other than
 /// what kind of package specifier it was.
-#[derive(Clone, Debug, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 pub struct PackageReqReference {
   pub req: PackageReq,
   pub sub_path: Option<String>,