diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2763750cb..ec7dc82a6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,13 +37,13 @@ jobs:
             CC: gcc
 
           - BUILD_TYPE: Release
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             BUILD_SHARED_LIBS: yes
             OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             WITH_MPFR: yes
             INTEGER_CLASS: gmpxx
             WITH_NUMPY: no
@@ -51,14 +51,14 @@ jobs:
             CC: gcc
 
           - BUILD_TYPE: Release
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             WITH_MPC: yes
             OS: ubuntu-20.04
             CC: gcc
 
           - BUILD_TYPE: Release
             WITH_MPFR: yes
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             OS: ubuntu-20.04
             CC: gcc
 
@@ -84,14 +84,14 @@ jobs:
           #  CC: gcc
 
           - BUILD_TYPE: Debug
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             WITH_BFD: yes
             BUILD_SHARED_LIBS: yes
             OS: ubuntu-20.04
             CC: clang
     
           - BUILD_TYPE: Release
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             WITH_NUMPY: yes
             OS: ubuntu-20.04
             CC: clang
@@ -108,7 +108,7 @@ jobs:
             EXTRA_APT_PACKAGES: 'llvm-14'
 
           - BUILD_TYPE: Debug
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             WITH_SCIPY: yes
             WITH_LLVM: 5.0
             OS: macos-13
@@ -121,13 +121,13 @@ jobs:
             CC: clang
 
           - BUILD_TYPE: Debug
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             WITH_NUMPY: no
             OS: macos-13
             CC: gcc
 
           - BUILD_TYPE: Release
-            PYTHON_VERSION: '3.8'
+            PYTHON_VERSION: '3.13'
             OS: macos-13
             CC: gcc
 
diff --git a/appveyor.yml b/appveyor.yml
index f21df0aef..ce1c487ce 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -24,7 +24,7 @@ environment:
     - BUILD_TYPE: "Release"
       COMPILER: MSVC15
       PLATFORM: "x64"
-      PYTHON_VERSION: 38-x64
+      PYTHON_VERSION: 312-x64
       CONDA_INSTALL_LOCN: C:\\Miniconda38-x64
     - BUILD_TYPE: "Release"
       COMPILER: MSVC15
@@ -97,7 +97,7 @@ install:
 
 - set "PATH=C:\Python%PYTHON_VERSION%;C:\Python%PYTHON_VERSION%\Scripts;%PATH%"
 - echo %PATH%
-- pip install nose pytest cython
+- pip install nose pytest cython setuptools
 - if NOT [%WITH_NUMPY%]==[no] pip install numpy
 - if NOT [%WITH_SYMPY%]==[no] pip install sympy
 
diff --git a/bin/install_travis.sh b/bin/install_travis.sh
index 572bb0d2b..0460c58a9 100644
--- a/bin/install_travis.sh
+++ b/bin/install_travis.sh
@@ -2,7 +2,7 @@
 
 # symengine's bin/install_travis.sh will install miniconda
 
-export conda_pkgs="python=${PYTHON_VERSION} pip pytest gmp mpfr"
+export conda_pkgs="python=${PYTHON_VERSION} pip pytest setuptools gmp mpfr"
 
 if [[ "${WITH_NUMPY}" != "no" ]]; then
     export conda_pkgs="${conda_pkgs} numpy";
diff --git a/setup.py b/setup.py
index 035471db0..c082f3ea9 100644
--- a/setup.py
+++ b/setup.py
@@ -5,8 +5,8 @@
 import platform
 
 # Make sure the system has the right Python version.
-if sys.version_info[:2] < (3, 8):
-    print("SymEngine requires Python 3.8 or newer. "
+if sys.version_info[:2] < (3, 9):
+    print("SymEngine requires Python 3.9 or newer. "
           "Python %d.%d detected" % sys.version_info[:2])
     sys.exit(-1)
 
@@ -224,13 +224,13 @@ def finalize_options(self):
 setup(name="symengine",
       version="0.14.0",
       description="Python library providing wrappers to SymEngine",
-      setup_requires=['cython>=0.29.24'],
+      setup_requires=['cython>=0.29.24', 'setuptools'],
       long_description=long_description,
       author="SymEngine development team",
       author_email="symengine@googlegroups.com",
       license="MIT",
       url="https://github.com/symengine/symengine.py",
-      python_requires='>=3.8,<4',
+      python_requires='>=3.9,<4',
       zip_safe=False,
       packages=['symengine', 'symengine.lib', 'symengine.tests'],
       cmdclass = cmdclass,
@@ -241,10 +241,10 @@ def finalize_options(self):
         'Topic :: Scientific/Engineering',
         'Topic :: Scientific/Engineering :: Mathematics',
         'Topic :: Scientific/Engineering :: Physics',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         ]
       )
diff --git a/symengine/lib/symengine_wrapper.in.pyx b/symengine/lib/symengine_wrapper.in.pyx
index 26c31ad87..6fe0ffa5e 100644
--- a/symengine/lib/symengine_wrapper.in.pyx
+++ b/symengine/lib/symengine_wrapper.in.pyx
@@ -1213,9 +1213,6 @@ cdef class Basic(object):
     def __int__(self):
         return int(float(self))
 
-    def __long__(self):
-        return int(float(self))
-
     def __complex__(self):
         f = self.n(real=False)
         if not isinstance(f, (ComplexDouble, RealDouble)):
@@ -1523,9 +1520,6 @@ cdef class BooleanTrue(BooleanAtom):
     def _sage_(self):
         return True
 
-    def __nonzero__(self):
-        return True
-
     def __bool__(self):
         return True