diff --git a/api/Makefile b/api/Makefile
index 9070f007f..172630b25 100644
--- a/api/Makefile
+++ b/api/Makefile
@@ -9,14 +9,14 @@ PYLINT_ARG := libretime_api
 MYPY_ARG := libretime_api
 BANDIT_ARG := --exclude '*/tests/*' libretime_api || true
 
+export DJANGO_SETTINGS_MODULE=libretime_api.settings.testing
+
 format: .format
 lint: .format-check .pylint .mypy .bandit
 clean: .clean
 
 test: $(VENV)
-	source $(VENV)/bin/activate
-	export DJANGO_SETTINGS_MODULE=libretime_api.settings.testing
-	pytest -v \
+	$(VENV)/bin/pytest -v \
 		--numprocesses=$(CPU_CORES) \
 		--color=yes \
 		--cov-config=pyproject.toml \
@@ -27,9 +27,7 @@ test: $(VENV)
 
 SCHEMA_FILE ?= schema.yml
 schema: $(VENV)
-	source $(VENV)/bin/activate
-	export DJANGO_SETTINGS_MODULE=libretime_api.settings.testing
-	libretime-api spectacular --file $(SCHEMA_FILE)
+	$(VENV)/bin/libretime-api spectacular --file $(SCHEMA_FILE)
 	if command -v npx > /dev/null; then npx prettier --write $(SCHEMA_FILE); fi
 
 schema-foreach-commit:
diff --git a/tools/python.mk b/tools/python.mk
index 86f7efdb8..6103928b3 100644
--- a/tools/python.mk
+++ b/tools/python.mk
@@ -1,5 +1,3 @@
-.ONESHELL:
-
 .DEFAULT_GOAL := install
 SHELL := bash
 CPU_CORES := $(shell N=$$(nproc); echo $$(( $$N > 4 ? 4 : $$N )))
@@ -24,48 +22,40 @@ SHARED_DEV_REQUIREMENTS = \
 VENV = .venv
 $(VENV):
 	python3 -m venv $(VENV)
-	source $(VENV)/bin/activate
 	$(MAKE) install
 
 # SETUPTOOLS_ENABLE_FEATURES=legacy-editable is required to work
 # around https://github.com/PyCQA/pylint/issues/7306
 install: $(VENV)
-	source $(VENV)/bin/activate
-	pip install --upgrade pip setuptools wheel
-	pip install $(SHARED_DEV_REQUIREMENTS)
-	[[ -z "$(PIP_INSTALL)" ]] || SETUPTOOLS_ENABLE_FEATURES=legacy-editable pip install $(PIP_INSTALL)
+	$(VENV)/bin/pip install --upgrade pip setuptools wheel
+	$(VENV)/bin/pip install $(SHARED_DEV_REQUIREMENTS)
+	[[ -z "$(PIP_INSTALL)" ]] || SETUPTOOLS_ENABLE_FEATURES=legacy-editable $(VENV)/bin/pip install $(PIP_INSTALL)
 
 .PHONY: .format
 .format: $(VENV)
-	source $(VENV)/bin/activate
-	black .
-	isort . --combine-as --profile black
+	$(VENV)/bin/black .
+	$(VENV)/bin/isort . --combine-as --profile black
 
 .PHONY: .format-check
 .format-check: $(VENV)
-	source $(VENV)/bin/activate
-	black . --check
-	isort . --combine-as --profile black --check
+	$(VENV)/bin/black . --check
+	$(VENV)/bin/isort . --combine-as --profile black --check
 
 .PHONY: .pylint
 .pylint: $(VENV)
-	source $(VENV)/bin/activate
-	pylint --jobs=$(CPU_CORES) --output-format=colorized --recursive=true $(PYLINT_ARG)
+	$(VENV)/bin/pylint --jobs=$(CPU_CORES) --output-format=colorized --recursive=true $(PYLINT_ARG)
 
 .PHONY: .mypy
 .mypy: $(VENV)
-	source $(VENV)/bin/activate
-	mypy $(MYPY_ARG)
+	$(VENV)/bin/mypy $(MYPY_ARG)
 
 .PHONY: .bandit
 .bandit: $(VENV)
-	source $(VENV)/bin/activate
-	bandit -r $(BANDIT_ARG)
+	$(VENV)/bin/bandit -r $(BANDIT_ARG)
 
 .PHONY: .pytest
 .pytest: $(VENV)
-	source $(VENV)/bin/activate
-	pytest -v \
+	$(VENV)/bin/pytest -v \
 		--numprocesses=$(CPU_CORES) \
 		--color=yes \
 		--cov-config=pyproject.toml \