diff --git a/.github/workflows/code-check.yml b/.github/workflows/code-check.yml
index eaaa5bc..a95f0f9 100644
--- a/.github/workflows/code-check.yml
+++ b/.github/workflows/code-check.yml
@@ -19,10 +19,10 @@ jobs:
       with:
         ref: ${{ inputs.branch }}
 
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.9
 
     - name: Install dependencies
       run: |
diff --git a/.github/workflows/nightly-v1.yml b/.github/workflows/nightly-v1.yml
index 4504a1f..f35f8b6 100644
--- a/.github/workflows/nightly-v1.yml
+++ b/.github/workflows/nightly-v1.yml
@@ -22,7 +22,7 @@ jobs:
       max-parallel: 2
       matrix:
         os: ['ubuntu-latest', 'macos-13', 'windows-latest']
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
       - name: Check out code
         uses: actions/checkout@v2
diff --git a/.github/workflows/nightly-v2.yml b/.github/workflows/nightly-v2.yml
index 4195b4b..2fd41c5 100644
--- a/.github/workflows/nightly-v2.yml
+++ b/.github/workflows/nightly-v2.yml
@@ -22,7 +22,7 @@ jobs:
       max-parallel: 2
       matrix:
         os: ['ubuntu-latest', 'macos-13', 'windows-latest']
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
       - name: Check out code
         uses: actions/checkout@v2
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index cf4169d..e02db4a 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -24,10 +24,10 @@ jobs:
       with:
         ref: ${{ inputs.branch }}
 
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.9
 
     - name: Install dependencies
       run: |
diff --git a/setup.cfg b/setup.cfg
index 5b53cee..4f51f65 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -15,7 +15,6 @@ classifiers =
     Operating System :: OS Independent
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
@@ -29,7 +28,7 @@ packages = find:
 install_requires =
     firebolt-sdk>=1.13.0
     sqlalchemy>=1.0.0
-python_requires = >=3.8
+python_requires = >=3.9
 package_dir =
     = src
 
@@ -45,7 +44,7 @@ sqlalchemy.dialects =
 dev =
     allure-pytest==2.*
     devtools==0.7.0
-    greenlet==2.0.2
+    greenlet==3.2.4
     mock==4.0.3
     mypy==0.910
     pre-commit==3.5.0
diff --git a/src/firebolt_db/firebolt_dialect.py b/src/firebolt_db/firebolt_dialect.py
index fe0c918..f7a54bb 100644
--- a/src/firebolt_db/firebolt_dialect.py
+++ b/src/firebolt_db/firebolt_dialect.py
@@ -1,5 +1,4 @@
 import os
-from distutils.util import strtobool
 from types import ModuleType
 from typing import Any, Dict, List, Optional, Tuple, Union
 
@@ -83,6 +82,24 @@ def removesuffix(s: str, suffix: str) -> str:
     return result
 
 
+def strtobool(val: str) -> int:
+    """Copy of deprecated distutils.util.strtobool
+    Convert a string representation of truth to true (1) or false (0).
+
+    True values are 'y', 'yes', 't', 'true', 'on', and '1'; false values
+    are 'n', 'no', 'f', 'false', 'off', and '0'. Values are compared
+    case-insensitively. Raises ValueError if
+    'val' is anything else.
+    """
+    val = val.lower()
+    if val in ("y", "yes", "t", "true", "on", "1"):
+        return 1
+    elif val in ("n", "no", "f", "false", "off", "0"):
+        return 0
+    else:
+        raise ValueError("invalid truth value %r" % (val,))
+
+
 DEFAULT_TYPE = TEXT