diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8b81344..a79dcf0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -262,4 +262,12 @@ v2.5.1 (2024-04-02)
 #### Improvements
 - Updated the Python package dependencies to:
   - `requests>=2.31.0`
-  - `urllib3>=2.0.7`
\ No newline at end of file
+  - `urllib3>=2.0.7`
+
+
+2.5.5 (2024-05-15)
+-------------------
+
+#### Bugfixes
+- **a1000** module:
+  - Changed the `risk_score` parameter's type hint from `str` to `int` in `set_classification` method's docstring.
diff --git a/ReversingLabs/SDK/__init__.py b/ReversingLabs/SDK/__init__.py
index b2d3312..3055f94 100644
--- a/ReversingLabs/SDK/__init__.py
+++ b/ReversingLabs/SDK/__init__.py
@@ -5,4 +5,4 @@
 A Python SDK for communicating with ReversingLabs services.
 """
 
-__version__ = "2.5.4"
+__version__ = "2.5.5"
diff --git a/ReversingLabs/SDK/a1000.py b/ReversingLabs/SDK/a1000.py
index c8ef715..f2d917f 100644
--- a/ReversingLabs/SDK/a1000.py
+++ b/ReversingLabs/SDK/a1000.py
@@ -1124,7 +1124,7 @@ def set_classification(self, sample_hash, classification, system, risk_score=Non
             :type classification: str
             :param risk_score: If specified, it must be within range for the specified classification. If not specified,
             a default value is used: Goodware: 0, Suspicious: 6, Malicious: 10
-            :type risk_score: str
+            :type risk_score: int
             :param threat_platform: if specified, it must be on the supported list (platforms and subplatforms - see
             official API docs). If not specified, the default value is 'Win32'.
             :type threat_platform: str
@@ -2114,7 +2114,7 @@ def __create_post_payload(custom_filename=None, file_url=None,  crawler=None, ar
             :type classification: str
             :param risk_score: If specified, it must be within range for the specified classification. If not specified,
             a default value is used: Goodware: 0, Suspicious: 6, Malicious: 10
-            :type risk_score: str
+            :type risk_score: int
             :param threat_platform: if specified, it must be on the supported list (platforms and subplatforms - see
             official API docs). If not specified, the default value is 'Win32'.
             :type threat_platform: str