diff --git a/flake.nix b/flake.nix
index 9bd68c3da..e1985e1a0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -44,11 +44,11 @@
         in
         builtins.trace "Nix Primer version is ${v}" "git-${v}";
 
-      ghcVersion = "ghc981";
+      ghcVersion = "ghc982";
 
       # We must keep the weeder version in sync with the version of
       # GHC we're using.
-      weederVersion = "2.6.0";
+      weederVersion = "2.8.0";
 
       # Fourmolu updates often alter formatting arbitrarily, and we want to
       # have more control over this.