diff --git a/news/12873.feature.rst b/news/12873.feature.rst
new file mode 100644
index 00000000000..440fecc1d9f
--- /dev/null
+++ b/news/12873.feature.rst
@@ -0,0 +1,2 @@
+Minor performance improvement when installing packages with a large number
+of dependencies by increasing the requirement string cache size.
diff --git a/src/pip/_internal/utils/packaging.py b/src/pip/_internal/utils/packaging.py
index caad70f7fd1..5bac550d723 100644
--- a/src/pip/_internal/utils/packaging.py
+++ b/src/pip/_internal/utils/packaging.py
@@ -35,7 +35,7 @@ def check_requires_python(
     return python_version in requires_python_specifier
 
 
-@functools.lru_cache(maxsize=2048)
+@functools.lru_cache(maxsize=10000)
 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