diff --git a/.cargo/config.toml b/.cargo/config.toml
index 88c4f89..9825746 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,5 +1,2 @@
 [build]
 rustdocflags = "--document-private-items"
-
-[alias]
-xtask = "run -q --manifest-path ./bin/xtask/Cargo.toml --"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4348faf..0b89fe9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,4 +15,5 @@ jobs:
         with:
           toolchain: stable
           components: rustfmt, clippy
-      - run: cargo xtask ci
+      - uses: taiki-e/install-action@just
+      - run: just ci
diff --git a/docs/DEVELOPING.md b/docs/DEVELOPING.md
deleted file mode 100644
index fa369bd..0000000
--- a/docs/DEVELOPING.md
+++ /dev/null
@@ -1,10 +0,0 @@
-# Developing
-
-This document contains information related to development.
-
-## `cargo xtask`
-
-This repository uses the [`cargo-xtask`](https://github.com/matklad/cargo-xtask) pattern for local development
-and automation.
-
-To see what commands are available, execute `cargo xtask` from the root of the repository.
\ No newline at end of file
diff --git a/docs/RELEASE.md b/docs/RELEASE.md
index c55a186..f685c1d 100644
--- a/docs/RELEASE.md
+++ b/docs/RELEASE.md
@@ -26,7 +26,7 @@ Steps should be executed in sequential order.
 - [ ] Verify that everything looks/works as expected:
 
 ```shell
-cargo xtask ci
+just ci
 ```
 
 - [ ] Create and _do not merge_ a commit with the following message: `Update libgfold to <tag>`
@@ -56,7 +56,7 @@ Steps should be executed in sequential order.
 - [ ] Verify that everything looks/works as expected:
 
 ```shell
-cargo xtask ci
+just ci
 ```
 
 - [ ] Create and _do not merge_ a commit with the following message: `Update gfold to <tag>`
diff --git a/flake.lock b/flake.lock
index 4015052..3d0d4b9 100644
--- a/flake.lock
+++ b/flake.lock
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1733656523,
-        "narHash": "sha256-w0FXPfpGhOihoJDiwMsyN1EzpsXi2F8VQ+NVZQSMtys=",
+        "lastModified": 1733686850,
+        "narHash": "sha256-NQEO/nZWWGTGlkBWtCs/1iF1yl2lmQ1oY/8YZrumn3I=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "93dc9803a1ee435e590b02cde9589038d5cc3a4e",
+        "rev": "dd51f52372a20a93c219e8216fe528a648ffcbf4",
         "type": "github"
       },
       "original": {
@@ -48,11 +48,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1733711706,
-        "narHash": "sha256-uDfJ/TrLLqrtoNzfPODDOVyZ+JWsJfd5T1r7xuE6h6g=",
+        "lastModified": 1733798086,
+        "narHash": "sha256-XHIh0h84xDnjkqampyNI/r2FAkKmwbL719ZsygiJHKE=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "4eb3f096e14431bd0ab4cca039f9c9d77331cbfc",
+        "rev": "8a19e07800d64462913f3dbf5c9a20ea7b50e6cd",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index d5a4a70..0466d3b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -35,6 +35,13 @@
         devShells.default = mkShell {
           packages = [
             alejandra
+            bash
+            cargo-audit
+            cargo-bloat
+            cargo-udeps
+            coreutils
+            hyperfine
+            just
             rust-bin-with-overrides
           ];
         };
diff --git a/justfile b/justfile
index cdaba46..9b70007 100644
--- a/justfile
+++ b/justfile
@@ -41,8 +41,12 @@ bench directory=('../'): build-release
 
 size: build-release
     #!/usr/bin/env bash
-    gdu -b target/release/gfold
+    checker=gdu
+    if ! command -v $checker; then
+        checker=du
+    fi
+    $checker -b target/release/gfold
     binary=$(which gfold)
     if [[ -n "$binary" ]]; then
-        gdu -b "$(realpath "$binary")"
+        $checker -b "$(realpath "$binary")"
     fi