diff --git a/ci/python.sh b/ci/python.sh
index fe69a41e..de65eb02 100644
--- a/ci/python.sh
+++ b/ci/python.sh
@@ -24,7 +24,7 @@ QA_IGNORE="E501,E402,COM812,ICN001"
 QA_EXCLUDE="micropython/examples/common/lib/tinyweb/server.py,micropython/examples/pico_wireless/*"
 
 function qa_prepare_all {
-    pip install ruff
+    pip install ruff==0.12.0
 }
 
 function qa_check {
diff --git a/micropython/examples/breakout_encoder/demo.py b/micropython/examples/breakout_encoder/demo.py
index 20d77460..fbc0db51 100644
--- a/micropython/examples/breakout_encoder/demo.py
+++ b/micropython/examples/breakout_encoder/demo.py
@@ -14,7 +14,7 @@ enc.set_brightness(1.0)
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -33,7 +33,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/breakout_encoder_wheel/colour_picker.py b/micropython/examples/breakout_encoder_wheel/colour_picker.py
index 857c1f69..47e83ab0 100644
--- a/micropython/examples/breakout_encoder_wheel/colour_picker.py
+++ b/micropython/examples/breakout_encoder_wheel/colour_picker.py
@@ -35,7 +35,7 @@ last_centre_pressed = False
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -54,7 +54,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/breakout_mics6814/demo.py b/micropython/examples/breakout_mics6814/demo.py
index 27405302..3d781113 100644
--- a/micropython/examples/breakout_mics6814/demo.py
+++ b/micropython/examples/breakout_mics6814/demo.py
@@ -14,7 +14,7 @@ gas.set_brightness(1.0)
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -33,7 +33,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/breakout_potentiometer/demo.py b/micropython/examples/breakout_potentiometer/demo.py
index 86787b85..2770ac7e 100644
--- a/micropython/examples/breakout_potentiometer/demo.py
+++ b/micropython/examples/breakout_potentiometer/demo.py
@@ -13,7 +13,7 @@ pot.set_brightness(1.0)
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -32,7 +32,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/breakout_roundlcd/demo.py b/micropython/examples/breakout_roundlcd/demo.py
index 8ceac04e..a9fc9ca7 100644
--- a/micropython/examples/breakout_roundlcd/demo.py
+++ b/micropython/examples/breakout_roundlcd/demo.py
@@ -11,7 +11,7 @@ RADIUS = WIDTH // 2
 BLACK = display.create_pen(0, 0, 0)
 
 
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)  # XXX assume int() truncates!
@@ -30,7 +30,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/gfx_pack/co2.py b/micropython/examples/gfx_pack/co2.py
index 826abec9..c883af5d 100644
--- a/micropython/examples/gfx_pack/co2.py
+++ b/micropython/examples/gfx_pack/co2.py
@@ -36,7 +36,7 @@ def clear():
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -55,7 +55,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/gfx_pack/rainbow.py b/micropython/examples/gfx_pack/rainbow.py
index 6d4f8ceb..d1cd2f49 100644
--- a/micropython/examples/gfx_pack/rainbow.py
+++ b/micropython/examples/gfx_pack/rainbow.py
@@ -15,7 +15,7 @@ DANCE_TIME = 1.0
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -34,7 +34,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/gfx_pack/zoo_facts.py b/micropython/examples/gfx_pack/zoo_facts.py
index ccfac9f4..e2046c77 100644
--- a/micropython/examples/gfx_pack/zoo_facts.py
+++ b/micropython/examples/gfx_pack/zoo_facts.py
@@ -132,7 +132,7 @@ except Exception as e:  # noqa: BLE001
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -151,7 +151,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/keybow2040/usb_rgb_keypad.py b/micropython/examples/keybow2040/usb_rgb_keypad.py
index 82ebbc0c..545dc9cd 100644
--- a/micropython/examples/keybow2040/usb_rgb_keypad.py
+++ b/micropython/examples/keybow2040/usb_rgb_keypad.py
@@ -36,7 +36,7 @@ MAX_ON_TIME = 20.0
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -55,7 +55,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/pico_display/rainbow.py b/micropython/examples/pico_display/rainbow.py
index 423cf41b..07379dcc 100644
--- a/micropython/examples/pico_display/rainbow.py
+++ b/micropython/examples/pico_display/rainbow.py
@@ -28,7 +28,7 @@ led = RGBLED(6, 7, 8)
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -47,7 +47,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/pico_enviro/lcd.py b/micropython/examples/pico_enviro/lcd.py
index dc2a4089..6c552637 100644
--- a/micropython/examples/pico_enviro/lcd.py
+++ b/micropython/examples/pico_enviro/lcd.py
@@ -14,7 +14,7 @@ WIDTH, HEIGHT = display.get_bounds()
 # From CPython Lib/colorsys.py
 
 
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -33,7 +33,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/pico_explorer/rainbow.py b/micropython/examples/pico_explorer/rainbow.py
index ef40bccd..d01fbb59 100644
--- a/micropython/examples/pico_explorer/rainbow.py
+++ b/micropython/examples/pico_explorer/rainbow.py
@@ -12,7 +12,7 @@ BLACK = display.create_pen(0, 0, 0)
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -31,7 +31,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/pico_unicorn/demo.py b/micropython/examples/pico_unicorn/demo.py
index afaa1593..d677fb35 100644
--- a/micropython/examples/pico_unicorn/demo.py
+++ b/micropython/examples/pico_unicorn/demo.py
@@ -4,7 +4,7 @@ picounicorn = PicoUnicorn()
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -23,7 +23,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/pico_unicorn/rainbow.py b/micropython/examples/pico_unicorn/rainbow.py
index fcdd025b..1c765ed6 100644
--- a/micropython/examples/pico_unicorn/rainbow.py
+++ b/micropython/examples/pico_unicorn/rainbow.py
@@ -5,7 +5,7 @@ picounicorn = PicoUnicorn()
 
 
 # From CPython Lib/colorsys.py
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -24,7 +24,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/plasma_stick/encoder.py b/micropython/examples/plasma_stick/encoder.py
index bf7ad3d7..eda697ac 100644
--- a/micropython/examples/plasma_stick/encoder.py
+++ b/micropython/examples/plasma_stick/encoder.py
@@ -20,7 +20,7 @@ enc.set_brightness(1.0)
 # enc.set_direction(BreakoutEncoder.DIRECTION_CCW)     # Uncomment this to flip the direction
 
 
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     # From CPython Lib/colorsys.py
     if s == 0.0:
         return v, v, v
@@ -40,7 +40,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/tufty2040/main.py b/micropython/examples/tufty2040/main.py
index bf1fd245..1ad713a9 100644
--- a/micropython/examples/tufty2040/main.py
+++ b/micropython/examples/tufty2040/main.py
@@ -7,7 +7,7 @@ from picographics import PicoGraphics, DISPLAY_TUFTY_2040, PEN_RGB332
 from pimoroni import Button
 
 
-def hsv_to_rgb(h: float, s: float, v: float) -> tuple[float, float, float]:
+def hsv_to_rgb(h: float, s: float, v: float) -> tuple[float, float, float]:  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -30,7 +30,7 @@ def hsv_to_rgb(h: float, s: float, v: float) -> tuple[float, float, float]:
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q
 
 
diff --git a/micropython/examples/tufty2040/wavy_message.py b/micropython/examples/tufty2040/wavy_message.py
index 4242db76..08de5106 100644
--- a/micropython/examples/tufty2040/wavy_message.py
+++ b/micropython/examples/tufty2040/wavy_message.py
@@ -6,7 +6,7 @@ display = PicoGraphics(display=DISPLAY_TUFTY_2040, pen_type=PEN_RGB332, rotate=1
 
 
 # convert a hue, saturation, and value into rgb values
-def hsv_to_rgb(h, s, v):
+def hsv_to_rgb(h, s, v):  # noqa: RET503
     if s == 0.0:
         return v, v, v
     i = int(h * 6.0)
@@ -24,7 +24,7 @@ def hsv_to_rgb(h, s, v):
         return p, q, v
     if i == 4:
         return t, p, v
-    if i == 5:  # noqa: RET503
+    if i == 5:
         return v, p, q