--- a/PARIKernel/kernel.pyx	2021-07-15 11:35:01.110631020 -0600
+++ b/PARIKernel/kernel.pyx	2021-08-09 17:11:15.876821037 -0600
@@ -147,7 +147,7 @@ class PARIKernel(Kernel):
                 if store_history:
                     pari_add_hist(result, t_ms, t_ms)
 
-                if last != ';' and not silent:
+                if last != c';' and not silent:
                     content = {
                         'execution_count': pari_nb_hist(),
                         'data': {
--- a/setup.py	2018-01-23 08:34:03.000000000 -0700
+++ b/setup.py	2021-08-09 17:01:55.223696668 -0600
@@ -35,6 +35,8 @@ if HAVE_SVG:
     ext = Extension("PARIKernel.svg", ["PARIKernel/svg"+ext], libraries=["pari"])
     extensions.append(ext)
 
+for e in extensions:
+    e.cython_directives = {"language_level": "3"}
 
 class no_egg(_bdist_egg):
     def run(self):