diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 2677e85..f8ff469 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.9', '3.10', '3.11', '3.12', '3.13', '3.14' ]
+        python-version: [ '3.9', '3.10', '3.11', '3.12', '3.13', '3.14', '3.15' ]
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6cefb4b..41100f4 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -22,7 +22,7 @@ repos:
     rev: 24.10.0
     hooks:
       - id: black
-        args: [ '--check', 'reportportal_client', 'tests' ]
+        args: [ '--check', './reportportal_client', './tests' ]
   - repo: https://github.com/pycqa/isort
     rev: 5.13.2
     hooks:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3a766c7..e6dcdbf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,15 @@
 # Changelog
 
 ## [Unreleased]
+### Added
+- Official `Python 3.15` support, by @HardNorth
+### Changed
+- `FATAL` and `CRITICAL` logging levels now report as `FATAL` on ReportPortal (previously was `ERROR`), by @HardNorth
+- `certify` upper version updated on `2026.10.19`, by @HardNorth
+- `aiohttp` upper version updated on `3.14.5`, by @HardNorth
+
+## [5.7.10]
+### Changed
 - `aiohttp` update upper version, by @HardNorth
 
 ## [5.7.9]
diff --git a/reportportal_client/logs/__init__.py b/reportportal_client/logs/__init__.py
index e0ca67c..5f1df3f 100644
--- a/reportportal_client/logs/__init__.py
+++ b/reportportal_client/logs/__init__.py
@@ -33,7 +33,7 @@
     logging.INFO: "INFO",
     logging.WARNING: "WARN",
     logging.ERROR: "ERROR",
-    logging.CRITICAL: "ERROR",
+    logging.CRITICAL: "FATAL",
 }
 
 MAX_LOG_BATCH_SIZE: int = 20
diff --git a/requirements.txt b/requirements.txt
index 2689b6d..b626b36 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 typing-extensions>=4.13.2, <=4.16.0
 requests>=2.32.5, <=2.34.2
-aiohttp>=3.13.4, <=3.14.3
-certifi>=2026.2.25, <=2026.7.22
+aiohttp>=3.13.4, <=3.14.5
+certifi>=2026.2.25, <=2026.10.19
diff --git a/setup.py b/setup.py
index 38c5975..e64fbaf 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 
 from setuptools import find_packages, setup
 
-__version__ = "5.7.10"
+__version__ = "5.7.11"
 
 TYPE_STUBS = ["*.pyi"]
 
@@ -45,6 +45,7 @@ def read_file(fname):
         "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: 3.14",
+        "Programming Language :: Python :: 3.15",
     ],
     install_requires=read_file("requirements.txt").splitlines(),
 )
diff --git a/tox.ini b/tox.ini
index 7304908..465854c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -8,6 +8,7 @@ envlist =
     py312
     py313
     py314
+    py315
 
 [testenv]
 deps =
@@ -32,3 +33,4 @@ python =
     3.12: py312
     3.13: py313
     3.14: py314
+    3.15: py315