diff --git a/Makefile b/Makefile
index 5ce5448..494e84c 100644
--- a/Makefile
+++ b/Makefile
@@ -50,20 +50,21 @@ dist-deploy: devdeps dist
 	@[[ -n "$${CIRCLE_TAG}" ]] && $(PIPENV) run s3cmd -c .s3cfg put -P dist/kmk-latest.zip s3://kmk-releases/$${CIRCLE_TAG}.zip >/dev/null || true
 	@[[ -n "$${CIRCLE_TAG}" ]] && $(PIPENV) run s3cmd -c .s3cfg put -P dist/kmk-latest.unoptimized.zip s3://kmk-releases/$${CIRCLE_TAG}.unoptimized.zip >/dev/null || true
 
-dist/kmk-latest.zip: compile
+dist/kmk-latest.zip: compile boot.py
 	@echo "===> Building optimized ZIP"
 	@mkdir -p dist
 	@cd $(MPY_TARGET_DIR) && zip -r ../dist/kmk-latest.zip kmk 2>&1 >/dev/null
+	@zip -r dist/kmk-latest.zip boot.py 2>&1 >/dev/null
 
 dist/$(DIST_DESCRIBE).zip: dist/kmk-latest.zip
 	@echo "===> Aliasing optimized ZIP"
 	@cp dist/kmk-latest.zip dist/kmk-$(DIST_DESCRIBE).zip
 
-dist/kmk-latest.unoptimized.zip: $(PY_KMK_TREE)
+dist/kmk-latest.unoptimized.zip: $(PY_KMK_TREE) boot.py
 	@echo "===> Building unoptimized ZIP"
 	@mkdir -p dist
 	@echo "KMK_RELEASE = '$(DIST_DESCRIBE)'" > kmk/release_info.py
-	@zip -r dist/kmk-latest.unoptimized.zip kmk 2>&1 >/dev/null
+	@zip -r dist/kmk-latest.unoptimized.zip kmk boot.py 2>&1 >/dev/null
 	@rm -rf kmk/release_info.py
 
 dist/$(DIST_DESCRIBE).unoptimized.zip: dist/kmk-latest.unoptimized.zip
diff --git a/README.md b/README.md
index 0fcc6a0..715840a 100644
--- a/README.md
+++ b/README.md
@@ -86,7 +86,9 @@ Coming (hopefully) soon: Bluetooth support! Stay tuned.
   extract the zip to the USB drive exposed by CircuitPython, typically labeled
   `CIRCUITPY`.  Again, [we'll defer to Adafruit's
   documentation](https://learn.adafruit.com/welcome-to-circuitpython/circuitpython-libraries)
-  on adding libraries to a CircuitPython installation.
+  on adding libraries to a CircuitPython installation. You should end up with a
+  folder called `kmk` and a file called `boot.py`, both living at the top of
+  this USB drive.
 
 - Define your keyboard in a file called `main.py` on this `CIRCUITPY` drive and
   get tinkering! Examples of both handwired and ProMicro-\>ItsyBitsy converted
diff --git a/docs/flashing.md b/docs/flashing.md
index 9069e66..9ddb6ec 100644
--- a/docs/flashing.md
+++ b/docs/flashing.md
@@ -8,8 +8,11 @@ Linux).
 
 Given `make` and `rsync` are available on your system (in `$PATH`), the
 following will copy the `kmk` tree to your CircuitPython device, and will copy
-the file defined as `USER_KEYMAP` as your `main.py`. If any of these files exist
-on your CircuitPython device already, they will be overwritten without a prompt.
+the file defined as `USER_KEYMAP` as your `main.py`. It will also copy our
+`boot.py`, which allocates a larger stack size (simply - more of the device's
+RAM will be available to KMK and your keyboard config) than CircuitPython's
+default. If any of these files exist on your CircuitPython device already, they
+will be overwritten without a prompt.
 
 If you get permissions errors here, **don't run make as root or with sudo**. See
 `Troubleshooting` below.