diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e0e90f4..7c256ce 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: DeterminateSystems/nix-installer-action@v11
+      - uses: DeterminateSystems/nix-installer-action@v13
 
       - run: nix -vL --show-trace flake check
 
diff --git a/.github/workflows/deps.yml b/.github/workflows/deps.yml
index b1ba83b..22bce4f 100644
--- a/.github/workflows/deps.yml
+++ b/.github/workflows/deps.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: DeterminateSystems/nix-installer-action@v12
+      - uses: DeterminateSystems/nix-installer-action@v13
 
       - run: nix -vL run --show-trace .#update
 
diff --git a/.github/workflows/flake.yml b/.github/workflows/flake.yml
index 5aef002..f2456f6 100644
--- a/.github/workflows/flake.yml
+++ b/.github/workflows/flake.yml
@@ -16,10 +16,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: DeterminateSystems/nix-installer-action@v11
+      - uses: DeterminateSystems/nix-installer-action@v13
 
       - id: update-flake-lock
-        uses: DeterminateSystems/update-flake-lock@v21
+        uses: DeterminateSystems/update-flake-lock@v23
         with:
           commit-msg: 'flake: update inputs'
           pr-title: 'flake: update inputs'
diff --git a/config/corne.conf b/config/corne.conf
index 0a79719..787070c 100644
--- a/config/corne.conf
+++ b/config/corne.conf
@@ -4,9 +4,11 @@
 
 # Uncomment the following line to enable the Corne OLED Display
 # CONFIG_ZMK_DISPLAY=y
-#
-# # Uncomment the following line to enable deep sleep
-# CONFIG_ZMK_SLEEP=y
+
+# Uncomment the following lines to enable deep sleep
+CONFIG_ZMK_SLEEP=y
+# 5 minutes of inactivity to enter deep sleep
+CONFIG_ZMK_IDLE_SLEEP_TIMEOUT=600000
 
 # Uncomment the following line to increase the keyboard's wireless range
 CONFIG_BT_CTLR_TX_PWR_PLUS_8=y
diff --git a/config/corne.keymap b/config/corne.keymap
index cc447b1..8da6d63 100644
--- a/config/corne.keymap
+++ b/config/corne.keymap
@@ -33,7 +33,7 @@
 //                     | GUI  | ADJ | SPC  |   | ENT |     | ALT |
                         bindings = <
    &kp TAB   &kp N1 &kp N2    &kp N3   &kp N4  &kp N5      &kp N6   &kp N7   &kp N8 &kp N9    &kp N0  &kp BSPC
-   &kp LCTRL &trans &kp PG_UP &kp HOME &kp END &kp PG_DN   &kp LEFT &kp DOWN &kp UP &kp RIGHT &trans  &trans
+   &kp LCTRL &trans &kp PG_UP &kp HOME &kp END &kp PG_DN   &kp LEFT &kp DOWN &kp UP &kp RIGHT &trans  &kp RSHIFT
    &kp F1    &kp F2 &kp F3    &kp F4   &kp F5  &kp F6      &kp F7   &kp F8   &kp F9 &kp F10   &kp F11 &kp F12
                               &kp LGUI &trans  &kp SPACE   &kp RET  &mo 3    &kp RALT
                         >;