diff --git a/README.md b/README.md
index f804b39..529c631 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Reaper's Sky
 
 A curated Minecraft modpack about airships, exploration, and tech progression.
-**Minecraft 1.21.1 / NeoForge 21.1.248** — 107 mods.
+**Minecraft 1.21.1 / NeoForge 21.1.248** — 110 mods.
 
 ## Install (Prism Launcher) — one link
 
@@ -10,7 +10,7 @@ If you don't have it yet, grab the latest **Prism Launcher** here:
 
 1. Open Prism Launcher → **Add Instance → Import from ZIP**.
 2. Paste the raw URL to the `.mrpack` file in this repository
-   (e.g. `https://git.reaperofveriod.nl/ReaperOfVeriod/Reaper-s-Sky/raw/branch/main/ReapersSky-1.2.0.mrpack`).
+   (e.g. `https://git.reaperofveriod.nl/ReaperOfVeriod/Reaper-s-Sky/raw/branch/main/ReapersSky-1.2.1.mrpack`).
 3. Import. Prism downloads all mods, applies configs/shaders/resource pack, and sets the instance up automatically.
 4. (First launch) Allocate 8 GB RAM in **Settings → Java → Memory**. Requires Java 21.
 5. The multiplayer server `reaperofveriod.nl` is pre-listed — just hit **Multiplayer** and join.
@@ -18,7 +18,7 @@ If you don't have it yet, grab the latest **Prism Launcher** here:
 ## Server install (Debian 13) — one link
 
 Run this on the server box (sudo/root; needs internet). It installs Java 21,
-NeoForge 21.1.248, all 90 server-side mods (sha1-verified), and writes
+NeoForge 21.1.248, all 92 server-side mods (sha1-verified), and writes
 `eula.txt` + `server.properties` + an 8 GB `run.sh`:
 
 ```sh
@@ -189,6 +189,7 @@ manual options and troubleshooting.
 | JEI 19.44.0.403 | Recipe viewer |
 | appleskin 3.0.9 | Food/hunger HUD |
 | MouseTweaks 2.26.1 | Inventory mouse controls |
+| ClientSort 2.2.2 | One-click sort buttons in inventories & chests |
 | Controlling 19.0.5 | Searchable keybinds (Searchables 1.0.2) |
 | Jade 15.10.6 | "What am I looking at" HUD |
 | balm 21.0.65 | Cross-loader library |
@@ -213,6 +214,7 @@ manual options and troubleshooting.
 | Mod | Notes |
 |-----|-------|
 | Sodium 0.8.12 | Rendering performance |
+| MoreCulling 1.0.9 | Culls leaf & other block faces (Cloth Config 15.0.140) |
 | lithium 0.15.4 | Game logic performance |
 | ferritecore 7.0.3 | Memory optimization |
 | ImmediatelyFast 1.6.12 | Faster rendering |
diff --git a/ReapersSky-1.2.0.mrpack b/ReapersSky-1.2.1.mrpack
similarity index 95%
rename from ReapersSky-1.2.0.mrpack
rename to ReapersSky-1.2.1.mrpack
index 9df91ac..96d72a3 100644
Binary files a/ReapersSky-1.2.0.mrpack and b/ReapersSky-1.2.1.mrpack differ
diff --git a/build_mrpack.py b/build_mrpack.py
index 937b4b5..a861a4a 100755
--- a/build_mrpack.py
+++ b/build_mrpack.py
@@ -13,7 +13,7 @@ INSTANCE = os.path.expanduser(
 )
 MODS_DIR = os.path.join(INSTANCE, "mods")
 OUT = os.path.join(os.path.dirname(os.path.abspath(__file__)),
-                   "ReapersSky-1.2.0.mrpack")
+                   "ReapersSky-1.2.1.mrpack")
 
 # (name in instance, override source path) — shipped as-is into .minecraft
 OVERRIDES = [
@@ -84,9 +84,9 @@ def main():
     index = {
         "formatVersion": 1,
         "game": "minecraft",
-        "versionId": "1.2.0",
+        "versionId": "1.2.1",
         "name": "Reaper's Sky",
-        "summary": "Airships, exploration & tech. 107 mods for Minecraft 1.21.1 / NeoForge.",
+        "summary": "Airships, exploration & tech. 110 mods for Minecraft 1.21.1 / NeoForge.",
         "files": files,
         "dependencies": {"minecraft": "1.21.1", "neoforge": "21.1.248"},
     }
diff --git a/server/README.md b/server/README.md
index c4494a4..3f898d4 100644
--- a/server/README.md
+++ b/server/README.md
@@ -6,7 +6,7 @@ Everything needed to run the Reaper's Sky NeoForge **1.21.1** server (NeoForge
 ## Quick start (on the server box)
 
 ```sh
-sudo ./deploy.sh     # installs Java 21 + curl/unzip, NeoForge, the 90 mods, config
+sudo ./deploy.sh     # installs Java 21 + curl/unzip, NeoForge, the 92 mods, config
 ./run.sh             # start the server (run inside tmux/screen so it survives logout)
 ```
 
@@ -22,7 +22,7 @@ and verifies every mod by sha1 before installing.
 |------|--------|
 | System packages | `openjdk-21-jre-headless`, `curl`, `unzip` (needs root/`sudo`) |
 | NeoForge server | Official installer from Maven → server files + `libraries/` |
-| Mods | Downloads the 90 server-safe mods pinned in `mods.json`, sha1-verified; prunes jars no longer in the pack |
+| Mods | Downloads the 92 server-safe mods pinned in `mods.json`, sha1-verified; prunes jars no longer in the pack |
 | Config | `eula.txt` (EULA accepted), `server.properties` (IP, motd, 8 G) |
 | Run script | `run.sh` with 8 GB + G1GC (`nogui`) |
 
diff --git a/server/build_mods.py b/server/build_mods.py
index cfb3eb8..6c6f886 100644
--- a/server/build_mods.py
+++ b/server/build_mods.py
@@ -27,6 +27,7 @@ CLIENT_ONLY = {
     "EuphoriaPatcher-1.9.3-r5.8.1-neoforge.jar",
     "iris-flywheel-compat-NeoForge-2.3.1.jar",
     "sodium-neoforge-0.8.12+mc1.21.1.jar",
+    "moreculling-neoforge-1.21.1-1.0.9.jar",
     "ImmediatelyFast-NeoForge-1.6.12+1.21.1.jar",
     "entityculling-neoforge-1.10.5-mc1.21.1.jar",
     "dynamic-fps-3.11.4+mc1.21.0-neoforge.jar",
diff --git a/server/mods.json b/server/mods.json
index 9262faa..07d3cd5 100644
--- a/server/mods.json
+++ b/server/mods.json
@@ -157,6 +157,16 @@
       "url": "https://cdn.modrinth.com/data/4KWv7wbN/versions/4ItA9dOc/chisel-neoforge-2.0.1%2Bmc1.21.1.jar",
       "sha1": "def703bf88cb3bb2960260418e8b36fe47a53dfd"
     },
+    {
+      "file": "clientsort-neoforge-2.2.2+1.21.1.jar",
+      "url": "https://cdn.modrinth.com/data/K0AkAin6/versions/lLpcVRPr/clientsort-neoforge-2.2.2%2B1.21.1.jar",
+      "sha1": "9d13b8315b03bda4bc6f5637c51f25a99cdcacd3"
+    },
+    {
+      "file": "cloth-config-15.0.140-neoforge.jar",
+      "url": "https://cdn.modrinth.com/data/9s6osm5g/versions/izKINKFg/cloth-config-15.0.140-neoforge.jar",
+      "sha1": "c3e5733ba4503b102589a026000fd5ce0212f6f2"
+    },
     {
       "file": "copycats-3.0.6+mc.1.21.1-neoforge.jar",
       "url": "https://cdn.modrinth.com/data/UT2M39wf/versions/DVQFhrV3/copycats-3.0.6%2Bmc.1.21.1-neoforge.jar",