Index: PyQt5_sip-12.11.1/setup.py
===================================================================
--- PyQt5_sip-12.11.1.orig/setup.py
+++ PyQt5_sip-12.11.1/setup.py
@@ -40,6 +40,6 @@ setup(
         name='PyQt5_sip',
         version='12.11.1',
         license='SIP',
-        python_requires='>=3.7',
+        python_requires='>=3.6',
         ext_modules=[module]
      )
Index: PyQt5_sip-12.11.1/sip.h
===================================================================
--- PyQt5_sip-12.11.1.orig/sip.h
+++ PyQt5_sip-12.11.1/sip.h
@@ -24,8 +24,8 @@
 #include <Python.h>
 
 /* Sanity check on the Python version. */
-#if PY_VERSION_HEX < 0x03070000
-#error "This version of PyQt5.sip requires Python v3.7 or later"
+#if PY_VERSION_HEX < 0x03060000
+#error "This version of PyQt5.sip requires Python v3.6 or later"
 #endif
 
 
Index: PyQt5_sip-12.11.1/siplib.c
===================================================================
--- PyQt5_sip-12.11.1.orig/siplib.c
+++ PyQt5_sip-12.11.1/siplib.c
@@ -1041,6 +1041,10 @@ const sipAPIDef *sip_init_library(PyObje
     PyObject *obj;
     PyMethodDef *md;
 
+#if PY_VERSION_HEX < 0x03070000 && defined(WITH_THREAD)
+    PyEval_InitThreads();
+#endif
+
     /* Add the SIP version number. */
     obj = PyLong_FromLong(SIP_VERSION);
 
@@ -13294,12 +13298,16 @@ int sip_api_convert_from_slice_object(Py
         Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step,
         Py_ssize_t *slicelength)
 {
+#if PY_VERSION_HEX >= 0x03070000
     if (PySlice_Unpack(slice, start, stop, step) < 0)
         return -1;
 
     *slicelength = PySlice_AdjustIndices(length, start, stop, *step);
 
     return 0;
+#else
+    return PySlice_GetIndicesEx(slice, length, start, stop, step, slicelength);
+#endif
 }
 
 
Index: PyQt5_sip-12.11.1/PKG-INFO
===================================================================
--- PyQt5_sip-12.11.1.orig/PKG-INFO
+++ PyQt5_sip-12.11.1/PKG-INFO
@@ -9,7 +9,7 @@ License: SIP
 Platform: X11
 Platform: macOS
 Platform: Windows
-Requires-Python: >=3.7
+Requires-Python: >=3.6
 License-File: LICENSE
 License-File: LICENSE-GPL3
 License-File: LICENSE-GPL2
Index: PyQt5_sip-12.11.1/PyQt5_sip.egg-info/PKG-INFO
===================================================================
--- PyQt5_sip-12.11.1.orig/PyQt5_sip.egg-info/PKG-INFO
+++ PyQt5_sip-12.11.1/PyQt5_sip.egg-info/PKG-INFO
@@ -9,7 +9,7 @@ License: SIP
 Platform: X11
 Platform: macOS
 Platform: Windows
-Requires-Python: >=3.7
+Requires-Python: >=3.6
 License-File: LICENSE
 License-File: LICENSE-GPL3
 License-File: LICENSE-GPL2