I believe this is the fix: ``` diff --git a/Makefile b/Makefile index 8bbd1b6..0de8a89 100644 --- a/Makefile +++ b/Makefile @@ -349,7 +349,7 @@ install-caravel-cocotb: .PHONY: setup-cocotb-env setup-cocotb-env: - @(python3 $(PROJECT_ROOT)/verilog/dv/setup-cocotb.py $(CARAVEL_ROOT) $(MCW_ROOT) $(PDK_ROOT) $(PDK) $(PROJECT_ROOT)) + @(./venv-cocotb/bin/$(PYTHON_BIN) $(PROJECT_ROOT)/verilog/dv/setup-cocotb.py $(CARAVEL_ROOT) $(MCW_ROOT) $(PDK_ROOT) $(PDK) $(PROJECT_ROOT)) .PHONY: setup-cocotb setup-cocotb: install-caravel-cocotb setup-cocotb-env simenv-cocotb ```