diff --git a/stack.yaml b/stack.yaml
index 6521a7e..63c9779 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,5 +1,5 @@
 ---
-resolver: lts-20.23
+resolver: lts-21.2
 
 packages:
   - .
@@ -7,6 +7,10 @@ packages:
   - xmonad
   - xmonad-contrib
 
+extra-deps:
+  - github: peti/libmpd-haskell
+    commit: 5737096a339edc265a663f51ad9d29baee262694
+
 flags:
   xmonad-contrib:
     use_xft: true
diff --git a/stack.yaml.lock b/stack.yaml.lock
index a4a15c4..946c9f8 100644
--- a/stack.yaml.lock
+++ b/stack.yaml.lock
@@ -3,10 +3,21 @@
 # For more information, please see the documentation at:
 #   https://docs.haskellstack.org/en/stable/lock_files
 
-packages: []
+packages:
+- completed:
+    name: libmpd
+    pantry-tree:
+      sha256: 0a9c3a98e6c6e6767eb97b376be1393bdca6710a42aa261ee40e3d1de81ed966
+      size: 5179
+    sha256: a9348fe8b9f0e845259a45a4323c42758f27e0b0b4ac3b626e1acc91777c0a44
+    size: 50385
+    url: https://github.com/peti/libmpd-haskell/archive/5737096a339edc265a663f51ad9d29baee262694.tar.gz
+    version: 0.10.0.0
+  original:
+    url: https://github.com/peti/libmpd-haskell/archive/5737096a339edc265a663f51ad9d29baee262694.tar.gz
 snapshots:
 - completed:
-    sha256: 4c972e067bae16b95961dbfdd12e07f1ee6c8fffabbfa05c3d65100b03f548b7
-    size: 650253
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/20/23.yaml
-  original: lts-20.23
+    sha256: bd34dcded0f9d502275871b7bcd9bbe356bf060276bc6b62fb9e8a225589c74c
+    size: 639151
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/2.yaml
+  original: lts-21.2
diff --git a/xmobar b/xmobar
index 088e493..78cbf4a 160000
--- a/xmobar
+++ b/xmobar
@@ -1 +1 @@
-Subproject commit 088e493b4bedba1db48d0c79c784771e5ed532ef
+Subproject commit 78cbf4ad6186bdd9235692ae04b600477c836c4c
diff --git a/xmonad-contrib b/xmonad-contrib
index 871f3f9..8e4880a 160000
--- a/xmonad-contrib
+++ b/xmonad-contrib
@@ -1 +1 @@
-Subproject commit 871f3f9942a81b13a7973f869f067c11ed2d98db
+Subproject commit 8e4880a36037449c6937799e6dca72430f351d76