diff --git a/.github/workflows/pypi_publish.yml b/.github/workflows/pypi_publish.yml
index 458dc902..5bb61fbe 100644
--- a/.github/workflows/pypi_publish.yml
+++ b/.github/workflows/pypi_publish.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         host-os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         openmp: ["off"]
       fail-fast: false
 
@@ -26,7 +26,7 @@ jobs:
         shell: bash -l {0}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set OpenMP mode
         if: matrix.openmp == 'on'
@@ -40,7 +40,7 @@ jobs:
           export MACOSX_DEPLOYMENT_TARGET="10.15"
           echo "MACOSX_DEPLOYMENT_TARGET=${MACOSX_DEPLOYMENT_TARGET}" >> $GITHUB_ENV
 
-      - uses: conda-incubator/setup-miniconda@v2
+      - uses: conda-incubator/setup-miniconda@v3
         with:
           activate-environment: testenv
           allow-softlinks: true
@@ -84,6 +84,7 @@ jobs:
           set -vxeuo pipefail
           python -m pip install --upgrade pip
           python -m pip install cibuildwheel
+          python -m pip install packaging
           echo "CIBW_BEFORE_ALL=pip install cmake" >> $GITHUB_ENV
           PYTH_VER=${{ matrix.python-version }}
           PYTH_VER=${PYTH_VER//.}
@@ -103,15 +104,17 @@ jobs:
           set -vxeuo pipefail
           cd env/python
           python -VV
+          python -m pip install packaging
+          python -m pip install setuptools
           python setup.py bdist_wheel
           ls -la dist/*
           mkdir -p ../../dist
           cp dist/*.whl ../../dist/
 
       - name: Publish wheels to GitHub artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
-          name: wheels
+          name: srwpy-${{ matrix.host-os }}-Py_${{ matrix.python-version }}-OpenMP_${{ matrix.openmp }}
           path: dist/*
 
       - name: Install the package and test requirements
@@ -146,15 +149,16 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Download wheels from GitHub artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
-          name: wheels
           path: dist/
+          merge-multiple: true
 
       - name: Publish wheels to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          packages-dir: ./dist/
+          repository-url: https://test.pypi.org/legacy/
+          packages-dir: ./dist/
\ No newline at end of file
diff --git a/cpp/cmake/CMakeLists.txt b/cpp/cmake/CMakeLists.txt
index 0e2b8d0a..4cfd37e6 100644
--- a/cpp/cmake/CMakeLists.txt
+++ b/cpp/cmake/CMakeLists.txt
@@ -75,6 +75,9 @@ add_library(genesis OBJECT ${genesis_source_files})
 target_link_libraries(genesis genmath)
 target_include_directories(genesis PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/../src/ext/genesis/genesis_july08/)
 target_compile_definitions(genesis PRIVATE ${SRW_DEFINITIONS})
+if(UNIX)
+    target_compile_options(genesis PRIVATE -std=c99 -Wno-implicit-int)
+endif()
 
 #genmath
 set(genmath_source_files
diff --git a/cpp/gcc/Makefile b/cpp/gcc/Makefile
index 50d5f0a3..4d5b0c4e 100644
--- a/cpp/gcc/Makefile
+++ b/cpp/gcc/Makefile
@@ -112,7 +112,7 @@ PRG= libsrw.a
 	$(CXX) $(CFLAGS) -c $<  
 
 %.o: $(SRW_SRC_GENESIS_DIR)/%.c
-	$(CC) $(CFLAGS) -c $<  
+	$(CC) $(CFLAGS) -c $< -std=c99 -Wno-implicit-int
 
 # HG30112023
 ifeq ($(MODE), cuda)
diff --git a/cpp/src/clients/python/srwlpy.cpp b/cpp/src/clients/python/srwlpy.cpp
index bb1a98d0..03a8e9c9 100644
--- a/cpp/src/clients/python/srwlpy.cpp
+++ b/cpp/src/clients/python/srwlpy.cpp
@@ -3515,7 +3515,11 @@ void ParseDeviceParam(PyObject* oDev, double* &parGPUParam) //HG10202021 Convert
 		if(PyLong_Check(oDev)) {
 			parGPUParam = new double[2]; //HG08022024
 			parGPUParam[0] = 1; //OC: The number of parameters?
+#if PY_MAJOR_VERSION >=3 && PY_MINOR_VERSION >= 13 //HG16062025
+			parGPUParam[1] = (double)PyLong_AsInt(oDev);
+#else
 			parGPUParam[1] = (double)_PyLong_AsInt(oDev);
+#endif
 			return;
 		}
 	}
diff --git a/env/python/setup.py b/env/python/setup.py
index a50ed1e6..d60f53a1 100644
--- a/env/python/setup.py
+++ b/env/python/setup.py
@@ -85,7 +85,7 @@ def build_extension(self, ext):
     requirements = [line for line in requirements_file.read().splitlines()
                     if not line.startswith('#')]
 
-setup(name='srwpy',
+setup(name='srwpy-hgtest00',
       version='4.1.0', #'4.0.0b1',
       description='This is SRW for Python',
       author='O. Chubar et al.',
diff --git a/env/python/srwpy/srwl_uti_smp_rnd_obj2d.py b/env/python/srwpy/srwl_uti_smp_rnd_obj2d.py
index f40369b3..6d78b82a 100644
--- a/env/python/srwpy/srwl_uti_smp_rnd_obj2d.py
+++ b/env/python/srwpy/srwl_uti_smp_rnd_obj2d.py
@@ -11,7 +11,7 @@
 import random #OC01082020
 import numpy as np
 
-from skimage.draw import polygon, circle, ellipse
+from skimage.draw import polygon, ellipse
 
 # ********************** Get the distance between point jj and the other points
 def get_r1j( px, py, jj):
diff --git a/env/python/srwpy/uti_plot.py b/env/python/srwpy/uti_plot.py
index 9806ef86..6d79ec30 100644
--- a/env/python/srwpy/uti_plot.py
+++ b/env/python/srwpy/uti_plot.py
@@ -57,7 +57,10 @@ def uti_plot_init(backend=DEFAULT_BACKEND, fname_format=None):
     global _backend
     if backend is not None:
         try:
-            import uti_plot_matplotlib
+            try:
+                from . import uti_plot_matplotlib
+            except:
+                import uti_plot_matplotlib
             _backend = uti_plot_matplotlib.Backend(backend, fname_format)
             return
         except: