diff --git a/src/pip/_internal/utils/packaging.py b/src/pip/_internal/utils/packaging.py
index 4b8fa0fe397..27348dcf603 100644
--- a/src/pip/_internal/utils/packaging.py
+++ b/src/pip/_internal/utils/packaging.py
@@ -33,8 +33,7 @@ def check_requires_python(
     python_version = version.parse(".".join(map(str, version_info)))
     return python_version in requires_python_specifier
 
-
-@functools.lru_cache(maxsize=2048)
+@functools.lru_cache(maxsize=8192)
 def get_requirement(req_string: str) -> Requirement:
     """Construct a packaging.Requirement object with caching"""
     # Parsing requirement strings is expensive, and is also expected to happen