diff --git a/pyo3-build-config/src/impl_.rs b/pyo3-build-config/src/impl_.rs
index 032aa34b23a..769a5dd2025 100644
--- a/pyo3-build-config/src/impl_.rs
+++ b/pyo3-build-config/src/impl_.rs
@@ -1131,7 +1131,16 @@ fn default_lib_name_unix(
             Some(ld_version) => format!("python{}", ld_version),
             None => format!("python{}.{}", version.major, version.minor),
         },
-        PythonImplementation::PyPy => format!("pypy{}-c", version.major),
+        PythonImplementation::PyPy => {
+            if version >= (PythonVersion { major: 3, minor: 9 }) {
+                match ld_version {
+                    Some(ld_version) => format!("pypy{}-c", ld_version),
+                    None => format!("pypy{}.{}-c", version.major, version.minor),
+                }
+            } else {
+                format!("pypy{}-c", version.major)
+            }
+        },
     }
 }