diff --git a/.github/scripts/build.sh b/.github/scripts/build.sh
index 645783cc1..67c4396f2 100755
--- a/.github/scripts/build.sh
+++ b/.github/scripts/build.sh
@@ -29,6 +29,8 @@ pip3 install --user -U -r requirements.txt --use-feature=in-tree-build
 # keeps breaking the rerunfailures plugin).
 pip3 install --user -U \
      blinker \
+     flake8 \
+     make \
      pytest-sentry \
      pytest-test-groups==1.0.3 \
      pytest-custom-exit-code==0.3.0 \
diff --git a/Makefile b/Makefile
index bd46d77fc..01d3a83ce 100644
--- a/Makefile
+++ b/Makefile
@@ -474,7 +474,8 @@ check-python-flake8:
 	@# E501 line too long (N > 79 characters)
 	@# E731 do not assign a lambda expression, use a def
 	@# W503: line break before binary operator
-	@flake8 --ignore=E501,E731,W503 --exclude $(shell echo ${PYTHON_GENERATED} | sed 's/ \+/,/g') ${PYSRC}
+	@# E741: ambiguous variable name
+	@flake8 --ignore=E501,E731,E741,W503 --exclude $(shell echo ${PYTHON_GENERATED} | sed 's/ \+/,/g') ${PYSRC}
 
 check-pytest-pyln-proto:
 	PATH=$(PYLN_PATH) PYTHONPATH=$(PYTHONPATH) $(PYTEST) contrib/pyln-proto/tests/