diff --git a/flake.lock b/flake.lock
index 1983d800..e89e09ca 100644
--- a/flake.lock
+++ b/flake.lock
@@ -82,6 +82,7 @@
       },
       "original": {
         "owner": "nix-community",
+        "ref": "main",
         "repo": "fenix",
         "type": "github"
       }
@@ -114,6 +115,7 @@
       },
       "original": {
         "owner": "edolstra",
+        "ref": "master",
         "repo": "flake-compat",
         "type": "github"
       }
@@ -147,6 +149,7 @@
       },
       "original": {
         "owner": "numtide",
+        "ref": "main",
         "repo": "flake-utils",
         "type": "github"
       }
@@ -162,6 +165,7 @@
       },
       "original": {
         "owner": "numtide",
+        "ref": "main",
         "repo": "nix-filter",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 568e75ab..f2549f35 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,15 +1,15 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
-    flake-utils.url = "github:numtide/flake-utils";
-    nix-filter.url = "github:numtide/nix-filter";
+    flake-utils.url = "github:numtide/flake-utils?ref=main";
+    nix-filter.url = "github:numtide/nix-filter?ref=main";
     flake-compat = {
-      url = "github:edolstra/flake-compat";
+      url = "github:edolstra/flake-compat?ref=master";
       flake = false;
     };
 
     fenix = {
-      url = "github:nix-community/fenix";
+      url = "github:nix-community/fenix?ref=main";
       inputs.nixpkgs.follows = "nixpkgs";
     };
     crane = {