diff --git a/.envrc b/.envrc
deleted file mode 100644
index 1d953f4..0000000
--- a/.envrc
+++ /dev/null
@@ -1 +0,0 @@
-use nix
diff --git a/.gitignore b/.gitignore
index 558634e..7ce83e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,5 +24,4 @@ go.work
 dist/
 
 .env
-.direnv
 .DS_Store
diff --git a/mise.toml b/mise.toml
new file mode 100644
index 0000000..6d3ca41
--- /dev/null
+++ b/mise.toml
@@ -0,0 +1,11 @@
+[tools]
+go = "1.24"
+goreleaser = "latest"
+"go:github.com/go-delve/delve/cmd/dlv" = "latest"
+"go:golang.org/x/tools/gopls" = "latest"
+"go:github.com/spf13/cobra-cli" = "latest"
+
+# used by the `build:demo` task. ttyd has no prebuilt macOS binary, so on
+# macOS install it separately: `brew install ttyd`
+ffmpeg = "latest"
+vhs = "latest"
diff --git a/shell.nix b/shell.nix
deleted file mode 100644
index 2e037e7..0000000
--- a/shell.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ pkgs ? import (fetchTarball "channel:nixos-unstable") {} }:
-
-pkgs.mkShell {
-  packages = with pkgs; [
-    delve
-    go_1_24
-    gopls
-    goreleaser
-  ];
-
-  shellHook = ''
-    go install github.com/spf13/cobra-cli@latest
-  '';
-
-  nativeBuildInputs = [ pkgs.gcc pkgs.pkg-config ];
-  buildInputs = pkgs.lib.optionals pkgs.stdenv.isLinux [ pkgs.xorg.libX11 ];
-}
diff --git a/tasks.toml b/tasks.toml
index 7b6a6c9..dc8066e 100644
--- a/tasks.toml
+++ b/tasks.toml
@@ -6,7 +6,7 @@ deps = [["deps"]]
 cmds = ["go build -o dist/daylog ./main.go {{.CLI_ARGS}}"]
 
 [tasks."build:demo"]
-cmds = ["nix-shell -p ffmpeg ttyd vhs --run \"vhs demo/demo.tape\""]
+cmds = ["vhs demo/demo.tape"]
 
 [tasks.run]
 cmds = ["go run main.go {{.CLI_ARGS}}"]