diff --git a/.gitignore b/.gitignore
index 1d759df5..220eca9d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.venv/
 book/
 build/
 terraform-*-tmp-*/
diff --git a/docs/Makefile b/docs/Makefile
index f87b09e1..4d77b705 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -5,7 +5,9 @@ default: book
 .PHONY: diagrams
 diagrams:
 	cd diagrams \
-		&& python *
+		&& python3 -m venv .venv \
+		&& pip3 install -r requirements.txt \
+		&& python3 *
 
 .PHONY: book
 book:
diff --git a/docs/diagrams/requirements.txt b/docs/diagrams/requirements.txt
new file mode 100644
index 00000000..ec562f21
--- /dev/null
+++ b/docs/diagrams/requirements.txt
@@ -0,0 +1 @@
+diagrams
diff --git a/tools/Dockerfile b/tools/Dockerfile
index b8259289..bdda61aa 100644
--- a/tools/Dockerfile
+++ b/tools/Dockerfile
@@ -16,6 +16,7 @@ RUN yes | pacman --sync --refresh \
         docker \
         docker-compose \
         git \
+        graphviz \
         helm \
         kubectl \
         libisoburn \