diff --git a/__pkginfo__.py b/__pkginfo__.py
index ddf48daf..84d8d4c4 100644
--- a/__pkginfo__.py
+++ b/__pkginfo__.py
@@ -51,7 +51,7 @@
     ]
 }
 ftp_url = None
-install_requires = ["click", "spark-parser >= 1.8.9, < 1.9.1", "xdis >= 6.1.1,<6.2.0"]
+install_requires = ["click", "spark-parser >= 1.8.9, < 1.9.2", "xdis >= 6.1.1, < 6.2.0"]
 
 license = "GPL3"
 mailing_list = "python-debugger@googlegroups.com"
diff --git a/decompyle3/main.py b/decompyle3/main.py
index 2da368df..f90f9ac3 100644
--- a/decompyle3/main.py
+++ b/decompyle3/main.py
@@ -67,7 +67,7 @@ def decompile(
     showasm: Optional[str] = None,
     showast={},
     timestamp=None,
-    showgrammar=False,
+    grammar=dict(PARSER_DEFAULT_DEBUG),
     source_encoding=None,
     code_objects={},
     source_size=None,
@@ -123,10 +123,6 @@ def write(s):
     if source_size:
         write("# Size of source mod 2**32: %d bytes" % source_size)
 
-    grammar = dict(PARSER_DEFAULT_DEBUG)
-    if showgrammar:
-        grammar["reduce"] = True
-
     debug_opts = {"asm": showasm, "tree": showast, "grammar": grammar}
 
     try: