diff --git a/python-cellframe b/python-cellframe
index 2e5c2c7ebee5be69121b4d8c9ced3209f65cb927..b1d15f9a307e40c4f53afbd307fe1daabdb376a1 160000
--- a/python-cellframe
+++ b/python-cellframe
@@ -1 +1 @@
-Subproject commit 2e5c2c7ebee5be69121b4d8c9ced3209f65cb927
+Subproject commit b1d15f9a307e40c4f53afbd307fe1daabdb376a1
diff --git a/version.mk b/version.mk
index 506c4fd36860f848d04ef2542d7549a686729ca8..d04641cfbde8540e8a05bb435b616fd186f7b16a 100644
--- a/version.mk
+++ b/version.mk
@@ -1,3 +1,3 @@
 VERSION_MAJOR=5
 VERSION_MINOR=2
-VERSION_PATCH=163
+VERSION_PATCH=164