diff --git a/src/libstore/content-address.hh b/src/libstore/content-address.hh
index 6cc3b7cd9..270e04789 100644
--- a/src/libstore/content-address.hh
+++ b/src/libstore/content-address.hh
@@ -217,8 +217,6 @@ struct StoreReferences
      * iff self is true.
      */
     size_t size() const;
-
-    auto operator <=>(const StoreReferences &) const = default;
 };
 
 // This matches the additional info that we need for makeTextPath
@@ -234,8 +232,6 @@ struct TextInfo
      * disallowed
      */
     StorePathSet references;
-
-    auto operator <=>(const TextInfo &) const = default;
 };
 
 struct FixedOutputInfo
@@ -254,8 +250,6 @@ struct FixedOutputInfo
      * References to other store objects or this one.
      */
     StoreReferences references;
-
-    auto operator <=>(const FixedOutputInfo &) const = default;
 };
 
 /**
@@ -272,8 +266,6 @@ struct ContentAddressWithReferences
 
     Raw raw;
 
-    auto operator <=>(const ContentAddressWithReferences &) const = default;
-
     MAKE_WRAPPER_CONSTRUCTOR(ContentAddressWithReferences);
 
     /**
diff --git a/src/libstore/store-reference.hh b/src/libstore/store-reference.hh
index e99335c0d..459cea9c2 100644
--- a/src/libstore/store-reference.hh
+++ b/src/libstore/store-reference.hh
@@ -71,7 +71,6 @@ struct StoreReference
     Params params;
 
     bool operator==(const StoreReference & rhs) const = default;
-    auto operator<=>(const StoreReference & rhs) const = default;
 
     /**
      * Render the whole store reference as a URI, including parameters.