diff --git a/flake.lock b/flake.lock
index 29ee0377bbd8fffe15617d39678576045008ed12..7457ce0dce6e7b7ff88dcc18524ce8b7e921f3c6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -131,22 +131,6 @@
         "type": "github"
       }
     },
-    "integer-logarithms": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1660123968,
-        "narHash": "sha256-2kekA7iAFDjgOV1ixhNBkuCUVEF3wZW5UGoQyb8jZUw=",
-        "owner": "haskellari",
-        "repo": "integer-logarithms",
-        "rev": "28a78aa2cafe12cf0b1f63c684be4fdf552afc61",
-        "type": "github"
-      },
-      "original": {
-        "owner": "haskellari",
-        "repo": "integer-logarithms",
-        "type": "github"
-      }
-    },
     "lint-utils": {
       "inputs": {
         "flake-utils": "flake-utils_2",
@@ -224,7 +208,6 @@
         "flake-parts": "flake-parts",
         "flake-utils": "flake-utils",
         "haskell-flake": "haskell-flake",
-        "integer-logarithms": "integer-logarithms",
         "lint-utils": "lint-utils",
         "memory": "memory",
         "nixpkgs": "nixpkgs_2",
diff --git a/flake.nix b/flake.nix
index 012516615eff6668e8b04d0b040925919d5852fb..d33d2e7b6d70b425e6f46fbd5de56c36bf9b7a86 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,10 +20,6 @@
     flake-parts.inputs.nixpkgs.follows = "nixpkgs";
     lint-utils.url = "git+https://gitlab.homotopic.tech/nix/lint-utils";
     haskell-flake.url = "github:srid/haskell-flake";
-    integer-logarithms = {
-      url = "github:haskellari/integer-logarithms";
-      flake = false;
-    };
     memory = {
       url = "github:parsonsmatt/hs-memory/0f760c8ba0b7d5aacf04a7294e87e5e4fff53f40";
       flake = false;
diff --git a/overlay.nix b/overlay.nix
index c0209a61fc07ff03aa395da64272215ac0ea9213..902edda9295894e49fb3e7c669f811192739643d 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -125,7 +125,7 @@ final: prev: with pkgs.haskell.lib; {
 
   indexed-traversable-instances = doJailbreak (dontCheck prev.indexed-traversable-instances);
 
-  integer-logarithms = final.callCabal2nix "integer-logarithms" inputs.integer-logarithms { };
+  integer-logarithms = final.callHackage "integer-logarithms" "1.0.3.1" { };
 
   invariant = doJailbreak prev.invariant;