diff --git a/session.py b/session.py
index e3c11ce65..82b06031d 100644
--- a/session.py
+++ b/session.py
@@ -213,7 +213,7 @@ def _get_json_signed(session, url: str, domain_full: str, session_headers: {},
 
 def get_json(signing_priv_key_pem: str,
              session, url: str, headers: {}, params: {}, debug: bool,
-             version: str = '1.3.0', http_prefix: str = 'https',
+             version: str = __version__, http_prefix: str = 'https',
              domain: str = 'testdomain',
              timeout_sec: int = 20, quiet: bool = False) -> {}:
     if not isinstance(url, str):
@@ -251,7 +251,7 @@ def get_json(signing_priv_key_pem: str,
 
 def get_vcard(xml_format: bool,
               session, url: str, params: {}, debug: bool,
-              version: str = '1.3.0', http_prefix: str = 'https',
+              version: str = __version__, http_prefix: str = 'https',
               domain: str = 'testdomain',
               timeout_sec: int = 20, quiet: bool = False) -> {}:
     if not isinstance(url, str):
@@ -329,7 +329,7 @@ def get_vcard(xml_format: bool,
 
 def download_html(signing_priv_key_pem: str,
                   session, url: str, headers: {}, params: {}, debug: bool,
-                  version: str = '1.3.0', http_prefix: str = 'https',
+                  version: str = __version__, http_prefix: str = 'https',
                   domain: str = 'testdomain',
                   timeout_sec: int = 20, quiet: bool = False) -> {}:
     if not isinstance(url, str):
@@ -674,7 +674,7 @@ def download_image_any_mime_type(session, url: str,
 
 def get_method(method_name: str, xml_str: str,
                session, url: str, params: {}, headers: {}, debug: bool,
-               version: str = '1.3.0', http_prefix: str = 'https',
+               version: str = __version__, http_prefix: str = 'https',
                domain: str = 'testdomain',
                timeout_sec: int = 20, quiet: bool = False) -> {}:
     if method_name not in ("REPORT", "PUT", "PROPFIND"):