diff --git a/nixio/pycore/section.py b/nixio/pycore/section.py
index fe7087b8..912351c0 100644
--- a/nixio/pycore/section.py
+++ b/nixio/pycore/section.py
@@ -7,7 +7,10 @@
 # LICENSE file in the root of the Project.
 from __future__ import (absolute_import, division, print_function)
 
-from collections import Sequence
+try:
+    from collections.abc import Sequence
+except ImportError:
+    from collections import Sequence
 
 from ..section import SectionMixin
 from .entity import NamedEntity
diff --git a/nixio/pycore/util/units.py b/nixio/pycore/util/units.py
index acb00665..30f21b6b 100644
--- a/nixio/pycore/util/units.py
+++ b/nixio/pycore/util/units.py
@@ -9,7 +9,10 @@
 from __future__ import (absolute_import, division, print_function)
 
 import re
-from collections import Sequence
+try:
+    from collections.abc import Sequence
+except ImportError:
+    from collections import Sequence
 from ..exceptions import InvalidUnit