diff --git a/src/bonsai/Makefile b/src/bonsai/Makefile
index ecc787c061..05abdb9622 100644
--- a/src/bonsai/Makefile
+++ b/src/bonsai/Makefile
@@ -87,7 +87,7 @@ BLENDER_PLATFORM:=windows-x64
 endif
 
 # Current build commit hash.
-OLD:=c49ca69
+OLD:=ec13294
 .PHONY: bump
 bump:
 ifndef NEW
diff --git a/src/ifcopenshell-python/Makefile b/src/ifcopenshell-python/Makefile
index 1802d2d342..883f3a6cde 100644
--- a/src/ifcopenshell-python/Makefile
+++ b/src/ifcopenshell-python/Makefile
@@ -55,8 +55,8 @@ ifeq ($(PLATFORM), win64)
 PLATFORMTAG:=win_amd64
 endif
 
-IOS_URL:=https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v0.8.1-c49ca69-$(PLATFORM).zip
-IFCCONVERT_URL:=https://s3.amazonaws.com/ifcopenshell-builds/IfcConvert-v0.8.1-c49ca69-$(PLATFORM).zip
+IOS_URL:=https://s3.amazonaws.com/ifcopenshell-builds/ifcopenshell-python-$(PYNUMBER)-v0.8.3-ec13294-$(PLATFORM).zip
+IFCCONVERT_URL:=https://s3.amazonaws.com/ifcopenshell-builds/IfcConvert-v0.8.3-ec13294-$(PLATFORM).zip
 
 .PHONY: test
 test: