diff --git a/repos/c2sm/packages/py-gt4py/package.py b/repos/c2sm/packages/py-gt4py/package.py
index a3489702ea..4da4031f56 100644
--- a/repos/c2sm/packages/py-gt4py/package.py
+++ b/repos/c2sm/packages/py-gt4py/package.py
@@ -19,6 +19,7 @@ class PyGt4py(PythonPackage):
     version('1.0.3.3', tag='icon4py_20240229', git=url)
     version('1.0.3.7', tag='icon4py_20240521', git=url)
     version('1.0.3.8', tag='icon4py_20240711', git=url)
+    version('1.0.3.9', tag='icon4py_20240911', git=url)
 
     maintainers = ['samkellerhals']
 
diff --git a/test/system_test.py b/test/system_test.py
index 1242cfe34a..2925c611e4 100644
--- a/test/system_test.py
+++ b/test/system_test.py
@@ -212,7 +212,7 @@ def test_py_gridtools_cpp_install_default(devirt_env):
 
 
 @pytest.mark.py_gt4py
-@pytest.mark.parametrize("version", ['1.0.3.3', '1.0.3.7', '1.0.3.8'])
+@pytest.mark.parametrize("version", ['1.0.3.3', '1.0.3.7', '1.0.3.9'])
 def test_install_py_gt4py_for_version(version, devirt_env):
     spack_install(f'py-gt4py @{version}')
 
@@ -229,7 +229,7 @@ def test_install_py_icon4py_version_0_0_11(devirt_env):
 
 @pytest.mark.py_icon4py
 def test_install_py_icon4py_version_0_0_12(devirt_env):
-    spack_install('py-icon4py @ 0.0.12 %gcc ^py-gt4py@1.0.3.8')
+    spack_install('py-icon4py @ 0.0.12 %gcc ^py-gt4py@1.0.3.9')
 
 
 @pytest.mark.py_hatchling