diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1f8debca..3dd2de0f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,12 +13,7 @@ jobs:
       with:
           # Nix Flakes doesn't work on shallow clones
           fetch-depth: 0
-    - uses: cachix/install-nix-action@v14
-      with:
-        install_url: https://github.com/numtide/nix-flakes-installer/releases/download/nix-2.4pre20210415_76980a1/install
-        extra_nix_config: |
-          experimental-features = nix-command flakes
-          system-features = nixos-test benchmark big-parallel kvm
+    - uses: cachix/install-nix-action@v15
     - name: List flake structure
       run: nix flake show
     - name: Run unit tests (flake)
diff --git a/flake.lock b/flake.lock
index 9e95dd66..8cdc03b5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixlib": {
       "locked": {
-        "lastModified": 1635640270,
-        "narHash": "sha256-7VRyUAgl/Aqh70fkx904zciroUnz1cIUu0MqMaVu1pU=",
+        "lastModified": 1636849918,
+        "narHash": "sha256-nzUK6dPcTmNVrgTAC1EOybSMsrcx+QrVPyqRdyKLkjA=",
         "owner": "nix-community",
         "repo": "nixpkgs.lib",
-        "rev": "21595a2653dd84bbde02dadb0847a1bbb98a2663",
+        "rev": "28a5b0557f14124608db68d3ee1f77e9329e9dd5",
         "type": "github"
       },
       "original": {
@@ -17,11 +17,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1635934775,
-        "narHash": "sha256-DUkBfZjgeefgqyvFxnkZiOOWXgHP5Y1oKp/Zm+LT05Y=",
+        "lastModified": 1637186689,
+        "narHash": "sha256-NU7BhgnwA/3ibmCeSzFK6xGi+Bari9mPfn+4cBmyEjw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4789953e5c1ef6d10e3ff437e5b7ab8eed526942",
+        "rev": "7fad01d9d5a3f82081c00fb57918d64145dc904c",
         "type": "github"
       },
       "original": {