diff --git a/Makefile b/Makefile
index 613b61bae..0a690d3b1 100644
--- a/Makefile
+++ b/Makefile
@@ -319,6 +319,8 @@ appimageupdate: all
 	# required for our stock Ubuntu SDL even though we don't use sound
 	# the readlink is a half-hearted attempt at being generic; the echo libsndio.so.6.1 is specific to the nightly builds
 	ln -sf /usr/lib/x86_64-linux-gnu/$(shell readlink /usr/lib/x86_64-linux-gnu/libsndio.so || echo libsndio.so.6.1) $(INSTALL_DIR)/koreader/libs/
+	# also copy libbsd.so.0, cf. https://github.com/koreader/koreader/issues/4627
+	ln -sf /lib/x86_64-linux-gnu/libbsd.so.0 $(INSTALL_DIR)/koreader/libs/
 ifeq ("$(wildcard $(APPIMAGETOOL))","")
 	# download appimagetool
 	wget "$(APPIMAGETOOL_URL)"
diff --git a/base b/base
index 765bd8b82..4f753f158 160000
--- a/base
+++ b/base
@@ -1 +1 @@
-Subproject commit 765bd8b82a634028725f6909e0c281521c18e002
+Subproject commit 4f753f158e08111b262cc0438598e552630bba5d