diff --git a/packages/layman/default.nix b/packages/layman/default.nix
index 56afd1f..55b164d 100644
--- a/packages/layman/default.nix
+++ b/packages/layman/default.nix
@@ -1,5 +1,6 @@
 { pkgs, lib, pythonPkgs ? pkgs.python311Packages }:
 let
+  vals = builtins.fromJSON (builtins.readFile ../../sources/layman.json);
   inherit pythonPkgs;
   f = { buildPythonPackage, i3ipc, setproctitle, tomli, setuptools }:
     buildPythonPackage rec {
@@ -9,8 +10,8 @@ let
       src = pkgs.fetchFromGitHub {
         owner = "frap129";
         repo = "layman";
-        rev = "c827811d71461d9190c3f5d0d00d339d74ff3407";
-        hash = "sha256-Z8gliSEZgFtOtCZf51J79SqMTHOEd2zwtv0tFiXWn8k=";
+        rev = vals.rev;
+        hash = vals.hash;
       };
       nativeBuildInputs = [ setuptools ];
       propagatedBuildInputs = [ i3ipc setproctitle tomli ];
diff --git a/sources/layman.json b/sources/layman.json
new file mode 100644
index 0000000..44ec61f
--- /dev/null
+++ b/sources/layman.json
@@ -0,0 +1,4 @@
+{
+  "rev": "c827811d71461d9190c3f5d0d00d339d74ff3407",
+  "hash": "sha256-Z8gliSEZgFtOtCZf51J79SqMTHOEd2zwtv0tFiXWn8k="
+}
diff --git a/sources/update-sources.sh b/sources/update-sources.sh
index 7fefc52..386f1c9 100755
--- a/sources/update-sources.sh
+++ b/sources/update-sources.sh
@@ -14,3 +14,15 @@ jq --null-input \
     --arg hash "$SWAYIMG_HASH" \
     '{"version": $version, "url": $url, "hash": $hash}' \
     > $DIRECTORY/swayimg.json
+echo "swayimg now at $SWAYIMG_VERSION"
+
+# Update layman
+LAYMAN_BRANCH=$(curl https://api.github.com/repos/frap129/layman | jq -r '.default_branch')
+LAYMAN_REV=$(curl https://api.github.com/repos/frap129/layman/git/refs/heads/$LAYMAN_BRANCH | \
+                jq -r '.object.sha')
+LAYMAN_HASH=$(nix-prefetch fetchFromGitHub --owner frap129 --repo layman --rev $LAYMAN_REV)
+jq --null-input \
+    --arg rev "$LAYMAN_REV" \
+    --arg hash "$LAYMAN_HASH" \
+    '{"rev": $rev, "hash": $hash}' \
+    > $DIRECTORY/layman.json