diff --git a/flake.lock b/flake.lock
index 41c367e..d69a63f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -144,6 +144,23 @@
         "type": "github"
       }
     },
+    "format-all": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1581716637,
+        "narHash": "sha256-ul7LCe60W8TIvUmUtZtZRo8489TK9iTPDsLHmzxY57M=",
+        "owner": "lassik",
+        "repo": "emacs-format-all-the-code",
+        "rev": "47d862d40a088ca089c92cd393c6dca4628f87d3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "lassik",
+        "repo": "emacs-format-all-the-code",
+        "rev": "47d862d40a088ca089c92cd393c6dca4628f87d3",
+        "type": "github"
+      }
+    },
     "nix-straight": {
       "flake": false,
       "locked": {
@@ -299,6 +316,7 @@
         "evil-quick-diff": "evil-quick-diff",
         "explain-pause-mode": "explain-pause-mode",
         "flake-utils": "flake-utils",
+        "format-all": "format-all",
         "nix-straight": "nix-straight",
         "nixpkgs": "nixpkgs",
         "nose": "nose",
diff --git a/flake.nix b/flake.nix
index 8d259df..4c81637 100644
--- a/flake.nix
+++ b/flake.nix
@@ -70,6 +70,8 @@
     revealjs.flake = false;
     rotate-text.url = "github:debug-ito/rotate-text.el";
     rotate-text.flake = false;
+    format-all.url = "github:lassik/emacs-format-all-the-code/47d862d40a088ca089c92cd393c6dca4628f87d3";
+    format-all.flake = false;
 
     nixpkgs.url = "nixpkgs/nixpkgs-unstable";
     flake-utils.url = "github:numtide/flake-utils";
diff --git a/overrides.nix b/overrides.nix
index b0fcd66..86a7b1e 100644
--- a/overrides.nix
+++ b/overrides.nix
@@ -107,6 +107,10 @@ self: super: {
     pname = "ob-racket";
   };
 
+  format-all = self.straightBuild {
+    pname = "format-all";
+  };
+
   # dune has a nontrivial derivation, which does not buildable from the melpa
   # wrapper falling back to the one in nixpkgs
   dune = ocamlPackages.dune_2.overrideAttrs (old: {