diff --git a/src/bonsai/Makefile b/src/bonsai/Makefile
index 38fbc61355..310d31a4b0 100644
--- a/src/bonsai/Makefile
+++ b/src/bonsai/Makefile
@@ -104,7 +104,7 @@ endif
 endif # def PLATFORM
 
 # Current build commit hash.
-OLD:=e8eb5e4
+OLD:=1c5b825
 .PHONY: bump
 bump:
 ifndef NEW
diff --git a/src/ifcopenshell-python/Makefile b/src/ifcopenshell-python/Makefile
index 78370a46fb..303811ad48 100644
--- a/src/ifcopenshell-python/Makefile
+++ b/src/ifcopenshell-python/Makefile
@@ -69,7 +69,7 @@ PLATFORMTAG:=win_amd64
 endif
 
 BINARY_VERSION:=0.8.4
-BUILD_COMMIT:=e8eb5e4
+BUILD_COMMIT:=1c5b825
 IOS_URL:=https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v$(BINARY_VERSION)-$(BUILD_COMMIT)-$(PLATFORM).zip
 IFCCONVERT_URL:=https://s3.amazonaws.com/ifcopenshell-builds/IfcConvert-v$(BINARY_VERSION)-$(BUILD_COMMIT)-$(PLATFORM).zip