diff --git a/dvc/config_schema.py b/dvc/config_schema.py
index e06caa31aa..5f6d1921df 100644
--- a/dvc/config_schema.py
+++ b/dvc/config_schema.py
@@ -215,6 +215,7 @@ def __call__(self, data):
                     "timeout": Coerce(int),
                     "gss_auth": Bool,
                     "allow_agent": Bool,
+                    "max_sessions": Coerce(int),
                     Optional("verify", default=False): Bool,
                     **REMOTE_COMMON,
                 },
diff --git a/pyproject.toml b/pyproject.toml
index 165f304e1f..29cd095af1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -84,8 +84,8 @@ lint = [
 ]
 oss = ["dvc-oss==2.19"]
 s3 = ["dvc-s3==2.21"]
-ssh = ["dvc-ssh==2.21"]
-ssh_gssapi = ["dvc-ssh[gssapi]==2.21"]
+ssh = ["dvc-ssh>=2.22.1,<3"]
+ssh_gssapi = ["dvc-ssh[gssapi]>=2.22.1,<3"]
 terraform = ["tpi[ssh]>=2.1"]
 testing = ["pytest-test-utils"]
 tests = [