diff --git a/docs/conftest.py b/docs/conftest.py
index ef79733..d1dcfc7 100644
--- a/docs/conftest.py
+++ b/docs/conftest.py
@@ -1,8 +1,16 @@
 from doctest import REPORT_NDIFF, ELLIPSIS
 
 from sybil import Sybil
-from sybil.parsers.doctest import DocTestParser, FIX_BYTE_UNICODE_REPR
-from sybil.parsers.codeblock import CodeBlockParser
+from sybil.parsers.doctest import DocTestParser
+try:
+    from sybil.parsers.doctest import FIX_BYTE_UNICODE_REPR
+except ImportError:
+    # sybil 3 removed the optionflag
+    FIX_BYTE_UNICODE_REPR = 0
+try:
+    from sybil.parsers.codeblock import PythonCodeBlockParser
+except ImportError:
+    from sybil.parsers.codeblock import CodeBlockParser as PythonCodeBlockParser
 from sybil.parsers.capture import parse_captures
 
 from testfixtures.compat import PY3
@@ -13,7 +21,7 @@
     pytest_collect_file = Sybil(
         parsers=[
             DocTestParser(optionflags=REPORT_NDIFF|ELLIPSIS|FIX_BYTE_UNICODE_REPR),
-            CodeBlockParser(['print_function']),
+            PythonCodeBlockParser(['print_function']),
             parse_captures,
             FileParser('tempdir'),
         ],