diff --git a/gradle.properties b/gradle.properties
index f416ff0d1..8646e29d9 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,6 +4,6 @@
 
 org.gradle.jvmargs=-Xmx3G
 
-modVersion=1.108.1
+modVersion=1.109.6
 
 mcVersion=1.4.7
diff --git a/src/main/resources/assets/cctweaked/lua/rom/apis/colors.lua b/src/main/resources/assets/cctweaked/lua/rom/apis/colors.lua
index 70ab61784..b98ff8d75 100644
--- a/src/main/resources/assets/cctweaked/lua/rom/apis/colors.lua
+++ b/src/main/resources/assets/cctweaked/lua/rom/apis/colors.lua
@@ -353,7 +353,8 @@ end
 
 --[[- Converts the given color to a paint/blit hex character (0-9a-f).
 
-This is equivalent to converting floor(log_2(color)) to hexadecimal.
+This is equivalent to converting `floor(log_2(color))` to hexadecimal. Values
+outside the range of a valid colour will error.
 
 @tparam number color The color to convert.
 @treturn string The blit hex code of the color.
@@ -367,7 +368,11 @@ colors.toBlit(colors.red)
 ]]
 function toBlit(color)
     expect(1, color, "number")
-    return color_hex_lookup[color] or string.format("%x", math.floor(math.log(color, 2)))
+    local hex = color_hex_lookup[color]
+    if hex then return hex end
+
+    if color < 0 or color > 0xffff then error("Colour out of range", 2) end
+    return string.format("%x", math.floor(math.log(color, 2)))
 end
 
 --[[- Converts the given paint/blit hex character (0-9a-f) to a color.
diff --git a/src/main/resources/assets/cctweaked/lua/rom/apis/window.lua b/src/main/resources/assets/cctweaked/lua/rom/apis/window.lua
index 848ccfb91..7be7aebaf 100644
--- a/src/main/resources/assets/cctweaked/lua/rom/apis/window.lua
+++ b/src/main/resources/assets/cctweaked/lua/rom/apis/window.lua
@@ -58,6 +58,17 @@ local type = type
 local string_rep = string.rep
 local string_sub = string.sub
 
+--- A custom version of [`colors.toBlit`], specialised for the window API.
+local function parse_color(color)
+    if type(color) ~= "number" then
+        -- By tail-calling expect, we ensure expect has the right error level.
+        return expect(1, color, "number")
+    end
+
+    if color < 0 or color > 0xffff then error("Colour out of range", 3) end
+    return 2 ^ math.floor(math.log(color, 2))
+end
+
 --[[- Returns a terminal object that is a space within the specified parent
 terminal object. This can then be used (or even redirected to) in the same
 manner as eg a wrapped monitor. Refer to [the term API][`term`] for a list of
@@ -341,10 +352,7 @@ function create(parent, nX, nY, nWidth, nHeight, bStartVisible)
     end
 
     local function setTextColor(color)
-        if type(color) ~= "number" then expect(1, color, "number") end
-        if tHex[color] == nil then
-            error("Invalid color (got " .. color .. ")" , 2)
-        end
+        if tHex[color] == nil then color = parse_color(color) end
 
         nTextColor = color
         if bVisible then
@@ -356,11 +364,7 @@ function create(parent, nX, nY, nWidth, nHeight, bStartVisible)
     window.setTextColour = setTextColor
 
     function window.setPaletteColour(colour, r, g, b)
-        if type(colour) ~= "number" then expect(1, colour, "number") end
-
-        if tHex[colour] == nil then
-            error("Invalid color (got " .. colour .. ")" , 2)
-        end
+        if tHex[colour] == nil then colour = parse_color(colour) end
 
         local tCol
         if type(r) == "number" and g == nil and b == nil then
@@ -385,10 +389,7 @@ function create(parent, nX, nY, nWidth, nHeight, bStartVisible)
     window.setPaletteColor = window.setPaletteColour
 
     function window.getPaletteColour(colour)
-        if type(colour) ~= "number" then expect(1, colour, "number") end
-        if tHex[colour] == nil then
-            error("Invalid color (got " .. colour .. ")" , 2)
-        end
+        if tHex[colour] == nil then colour = parse_color(colour) end
         local tCol = tPalette[colour]
         return tCol[1], tCol[2], tCol[3]
     end
@@ -396,10 +397,7 @@ function create(parent, nX, nY, nWidth, nHeight, bStartVisible)
     window.getPaletteColor = window.getPaletteColour
 
     local function setBackgroundColor(color)
-        if type(color) ~= "number" then expect(1, color, "number") end
-        if tHex[color] == nil then
-            error("Invalid color (got " .. color .. ")", 2)
-        end
+        if tHex[color] == nil then color = parse_color(color) end
         nBackgroundColor = color
     end
 
diff --git a/src/main/resources/assets/cctweaked/lua/rom/help/changelog.md b/src/main/resources/assets/cctweaked/lua/rom/help/changelog.md
index a7117b5ea..d728ba46a 100644
--- a/src/main/resources/assets/cctweaked/lua/rom/help/changelog.md
+++ b/src/main/resources/assets/cctweaked/lua/rom/help/changelog.md
@@ -1,3 +1,97 @@
+# New features in CC: Tweaked 1.109.6
+
+* Improve several Lua parser error messages.
+* Allow addon mods to register `require`able modules.
+
+Several bug fixes:
+* Fix weak tables becoming malformed when keys are GCed.
+
+# New features in CC: Tweaked 1.109.5
+
+* Add a new `/computercraft-computer-folder` command to open a computer's folder
+  in singleplayer.
+
+Several bug fixes:
+* Discard characters being typed into the editor when closing `edit`'s `Run` screen.
+
+# New features in CC: Tweaked 1.109.4
+
+Several bug fixes:
+* Don't log warnings when a computer allocates no bytes.
+* Fix incorrect list index in command computer's NBT conversion (lonevox).
+* Fix `endPage()` not updating the printer's block state.
+* Several documentation improvements (znepb).
+* Correctly mount disks before computer startup, not afterwards.
+* Update to Cobalt 0.9
+  * Debug hooks are now correctly called for every function.
+  * Fix several minor inconsistencies with `debug.getinfo`.
+  * Fix Lua tables being sized incorrectly when created from varargs.
+
+# New features in CC: Tweaked 1.109.3
+
+* Command computers now display in the operator items creative tab.
+
+Several bug fixes:
+* Error if too many websocket messages are queued to be sent at once.
+* Fix trailing-comma on method calls (e.g. `x:f(a, )` not using our custom error message.
+* Fix internal compiler error when using `goto` as the first statement in an `if` block.
+* Fix incorrect resizing of a tables' hash part when adding and removing keys.
+
+# New features in CC: Tweaked 1.109.2
+
+* `math.random` now uses Lua 5.4's random number generator.
+
+Several bug fixes:
+* Fix errors involving `goto` statements having the wrong line number.
+
+# New features in CC: Tweaked 1.109.1
+
+Several bug fixes:
+* Fix `mouse_drag` event not firing for right and middle mouse buttons.
+* Fix crash when syntax errors involve `goto` or `::`.
+* Fix deadlock occuring when adding/removing observers.
+* Allow placing seeds into compostor barrels with `turtle.place()`.
+
+# New features in CC: Tweaked 1.109.0
+
+* Update to Lua 5.2
+  * `getfenv`/`setfenv` now only work on Lua functions.
+  * Add support for `goto`.
+  * Remove support for dumping and loading binary chunks.
+* File handles, HTTP requests and websocket messages now use raw bytes rather than converting to UTF-8.
+* Add `allow_repetitions` option to `textutils.serialiseJSON`.
+* Track memory allocated by computers.
+
+Several bug fixes:
+* Fix error when using position captures and backreferences in string patterns (e.g. `()(%1)`).
+* Fix formatting non-real numbers with `%d`.
+
+# New features in CC: Tweaked 1.108.4
+
+* Rewrite `@LuaFunction` generation to use `MethodHandle`s instead of ASM.
+* Refactor `ComputerThread` to provide a cleaner interface.
+* Remove `disable_lua51_features` config option.
+* Update several translations (Sammy).
+
+Several bug fixes:
+* Fix monitor peripheral becoming "detached" after breaking and replacing a monitor.
+* Fix signs being empty when placed.
+* Fix several inconsistencies with mount error messages.
+
+# New features in CC: Tweaked 1.108.3
+
+Several bug fixes:
+* Fix disconnect when joining a dedicated server.
+
+# New features in CC: Tweaked 1.108.2
+
+* Add a tag for which blocks wired modems should ignore.
+
+Several bug fixes:
+* Fix monitors sometimes being warped after resizing.
+* Fix the skull recipes using the wrong UUID format.
+* Fix paint canvas not always being redrawn after a term resize.
+
 # New features in CC: Tweaked 1.108.1
 
 Several bug fixes:
diff --git a/src/main/resources/assets/cctweaked/lua/rom/help/whatsnew.md b/src/main/resources/assets/cctweaked/lua/rom/help/whatsnew.md
index 482cb7a40..4a57b064e 100644
--- a/src/main/resources/assets/cctweaked/lua/rom/help/whatsnew.md
+++ b/src/main/resources/assets/cctweaked/lua/rom/help/whatsnew.md
@@ -1,7 +1,9 @@
-New features in CC: Tweaked 1.108.1
+New features in CC: Tweaked 1.109.6
+
+* Improve several Lua parser error messages.
+* Allow addon mods to register `require`able modules.
 
 Several bug fixes:
-* Prevent no-opped players breaking or placing command computers.
-* Allow using `@LuaFunction`-annotated methods on classes defined in child classloaders.
+* Fix weak tables becoming malformed when keys are GCed.
 
 Type "help changelog" to see the full version history.