diff --git a/podman/api/client.py b/podman/api/client.py
index 7a98669b..02cf8932 100644
--- a/podman/api/client.py
+++ b/podman/api/client.py
@@ -101,7 +101,6 @@ def __init__(
         credstore_env: Optional[Mapping[str, str]] = None,
         use_ssh_client=True,
         max_pool_size=None,
-        max_pools_size=None,  # This parameter is kept only for backward compatibility.
         **kwargs,
     ):  # pylint: disable=unused-argument
         """Instantiate APIClient object.
@@ -115,7 +114,6 @@ def __init__(
             num_pools: The number of connection pools to cache.
             credstore_env: Environment for storing credentials.
             use_ssh_client: Use system ssh agent rather than ssh module. Always, True.
-            max_pools_size: Deprecated! Please use 'max_pool_size'.
             max_pool_size: Override number of connections pools to maintain.
                 Default: requests.adapters.DEFAULT_POOLSIZE
 
@@ -135,21 +133,6 @@ def __init__(
         # where the parameters are set specifically.
         http_adapter_kwargs = {}
 
-        # 'max_pools_size' has been changed to 'max_pool_size'
-        # and the below section is needed for backward compatible.
-        # This section can be removed in a future release.
-        if max_pools_size is not None:
-            warnings.warn(
-                "'max_pools_size' parameter is deprecated! Please use 'max_pool_size' parameter.",
-                ParameterDeprecationWarning,
-            )
-            if max_pool_size is not None:
-                raise ValueError(
-                    "Both of 'max_pools_size' and 'max_pool_size' parameters are set. "
-                    "Please use only the 'max_pool_size', 'max_pools_size' is deprecated!"
-                )
-            max_pool_size = max_pools_size
-
         if num_pools is not None:
             adapter_kwargs["pool_connections"] = num_pools
             http_adapter_kwargs["pool_connections"] = num_pools