diff --git a/README.md b/README.md
index 8cfee14..4163544 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,10 @@ Then, before using it for real,
     - To do this from commandline, run `nix run nixpkgs#sd -- haskell-template myproject * */*` 
 - Run `git add . && git commit -m rename` followed by `nix develop` (or `bin/run`) to verify that everything continues to work.
 
+## Tips
+
+- Run `nix flake update` to nixpkgs and other flake inputs.
+
 ## Other templates
 
 Some related templates include,
diff --git a/flake.lock b/flake.lock
index 81b1cac..ab7d5e2 100644
--- a/flake.lock
+++ b/flake.lock
@@ -3,11 +3,11 @@
     "flake-compat": {
       "flake": false,
       "locked": {
-        "lastModified": 1606424373,
-        "narHash": "sha256-oq8d4//CJOrVj+EcOaSXvMebvuTkmBJuT5tzlfewUnQ=",
+        "lastModified": 1627913399,
+        "narHash": "sha256-hY8g6H2KFL8ownSiFeMOjwPC8P0ueXpCVEbxgda3pko=",
         "owner": "edolstra",
         "repo": "flake-compat",
-        "rev": "99f1c2157fba4bfe6211a321fd0ee43199025dbf",
+        "rev": "12c64ca55c1014cdc1b16ed5a804aa8576601ff2",
         "type": "github"
       },
       "original": {
@@ -18,11 +18,11 @@
     },
     "flake-utils": {
       "locked": {
-        "lastModified": 1619345332,
-        "narHash": "sha256-qHnQkEp1uklKTpx3MvKtY6xzgcqXDsz5nLilbbuL+3A=",
+        "lastModified": 1623875721,
+        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "2ebf2558e5bf978c7fb8ea927dfaed8fefab2e28",
+        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
         "type": "github"
       },
       "original": {
@@ -33,11 +33,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1622501949,
-        "narHash": "sha256-pJfBV/uCHjyLAswopXNfX3lOufFcKVuOybJp6t4Luyk=",
+        "lastModified": 1628086773,
+        "narHash": "sha256-I8m00niDBqJ/0jTCHVGreo7kiDWe7Yqp+3CcvA0uTag=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "e09bfc5d1c50ca1bcb2c125472a4b641fb85b3df",
+        "rev": "1cc8723f0e5f56615f3d63cd97906afc77feacbe",
         "type": "github"
       },
       "original": {