diff --git a/index.markdown b/index.markdown
index a4bc5ef..bd6ea3e 100644
--- a/index.markdown
+++ b/index.markdown
@@ -4,5 +4,4 @@ layout: default
 
 -   [Radar Flood Water Extraction](https://github.com/linz/emergency-management-tools/tree/master/flooding/sentinel1_water_extraction)
 -   [Optical Flood Water Extraction](https://github.com/linz/emergency-management-tools/tree/master/flooding/sentinel2_water_extraction)
--   [Convert date/time from machine-readable to
-    human-readable]({{ 'machine-readable-to-human-readable-date-time/' | relative_url }})
+-   [Convert date/time from machine-readable to human-readable]({{ 'machine-readable-to-human-readable-date-time/' | relative_url }})
diff --git a/nixpkgs.nix b/nixpkgs.nix
index fcc35fb..23ba770 100644
--- a/nixpkgs.nix
+++ b/nixpkgs.nix
@@ -1,6 +1,7 @@
 import (
   builtins.fetchTarball {
-    url = "https://github.com/nixos/nixpkgs/archive/2057814051972fa1453ddfb0d98badbea9b83c06.tar.gz";
-    sha256 = "1a8jafyawg8mysv787q0cwghkza9kahbbniism7v2rcxas89b575";
+    name = "nixos-unstable-2024-09-02";
+    url = "https://github.com/nixos/nixpkgs/archive/12228ff1752d7b7624a54e9c1af4b222b3c1073b.tar.gz";
+    sha256 = "1dmng7f5rv4hgd0b61chqx589ra7jajsrzw21n8gp8makw5khvb2";
   }
 ) {}
diff --git a/python.nix b/python.nix
index 2c252db..a939933 100644
--- a/python.nix
+++ b/python.nix
@@ -1,2 +1,2 @@
 {pkgs}:
-pkgs.python3
+pkgs.python311