diff --git a/flake.lock b/flake.lock
index 932c5fcf5..96c35b088 100644
--- a/flake.lock
+++ b/flake.lock
@@ -39,15 +39,16 @@
     "libgit2": {
       "flake": false,
       "locked": {
-        "lastModified": 1721209236,
-        "narHash": "sha256-tDUQi+s8sxJ30SmUH7Ln9WmDz5jGatlgKumjwi7KnCo=",
+        "lastModified": 1715853528,
+        "narHash": "sha256-J2rCxTecyLbbDdsyBWn9w7r3pbKRMkI9E7RvRgAqBdY=",
         "owner": "libgit2",
         "repo": "libgit2",
-        "rev": "503b66cf00ad7dca940148529f60b1a409ccc462",
+        "rev": "36f7e21ad757a3dacc58cf7944329da6bc1d6e96",
         "type": "github"
       },
       "original": {
         "owner": "libgit2",
+        "ref": "v1.8.1",
         "repo": "libgit2",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index ff2c8ecfa..45c493c6f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,7 +7,7 @@
   inputs.nixpkgs-regression.url = "github:NixOS/nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
   inputs.nixpkgs-23-11.url = "github:NixOS/nixpkgs/a62e6edd6d5e1fa0329b8653c801147986f8d446";
   inputs.flake-compat = { url = "github:edolstra/flake-compat"; flake = false; };
-  inputs.libgit2 = { url = "github:libgit2/libgit2"; flake = false; };
+  inputs.libgit2 = { url = "github:libgit2/libgit2/v1.8.1"; flake = false; };
 
   # dev tooling
   inputs.flake-parts.url = "github:hercules-ci/flake-parts";