diff --git a/nixos/modules/installer/tools/nix-fallback-paths.nix b/nixos/modules/installer/tools/nix-fallback-paths.nix
index cb182a08a830..adde237c07c9 100644
--- a/nixos/modules/installer/tools/nix-fallback-paths.nix
+++ b/nixos/modules/installer/tools/nix-fallback-paths.nix
@@ -1,6 +1,6 @@
 {
-  x86_64-linux = "/nix/store/h180y3n5k1ypxgm1pcvj243qix5j45zz-nix-2.1.1";
-  i686-linux = "/nix/store/v2y4k4v9ml07jmfq739wyflapg3b7b5k-nix-2.1.1";
-  aarch64-linux = "/nix/store/v485craglq7xm5996ci8qy5dyc17dab0-nix-2.1.1";
-  x86_64-darwin = "/nix/store/lc3ymlix73kaad5srjdgaxp9ngr1sg6g-nix-2.1.1";
+  x86_64-linux = "/nix/store/mxg4bbblxfns96yrz0nalxyiyjl7gj98-nix-2.1.2";
+  i686-linux = "/nix/store/bgjgmbwirx63mwwychpikd7yc4k4lbjv-nix-2.1.2";
+  aarch64-linux = "/nix/store/yi18azn4nwrcwvaiag04jnxc1qs38fy5-nix-2.1.2";
+  x86_64-darwin = "/nix/store/fpivmcck2qpw5plrp599iraw2x9jp18k-nix-2.1.2";
 }
diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 7d78fef39742..ea0cdf9bd0f1 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -148,10 +148,10 @@ in rec {
   }) // { perl-bindings = nix1; };
 
   nixStable = (common rec {
-    name = "nix-2.1.1";
+    name = "nix-2.1.2";
     src = fetchurl {
       url = "http://nixos.org/releases/nix/${name}/${name}.tar.xz";
-      sha256 = "63b1d49ea678162ada6996e42abb62cbc6e65cfefa4faa5436ae37100504720b";
+      sha256 = "68e55382dac9e66f84ead69b3c786a4ea85d4a6611a7a740aa0b78fcc85db3ec";
     };
   }) // { perl-bindings = perl-bindings {
     nix = nixStable;