diff --git a/nixos/modules/installer/tools/nix-fallback-paths.nix b/nixos/modules/installer/tools/nix-fallback-paths.nix
index 5ad28ea9499e..a7d41d4a8436 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/z6avpvg24f6d1br2sr6qlphsq3h4d91v-nix-2.0.2";
-  i686-linux = "/nix/store/cdqjyb9srhwkc4gqbknnap7y31lws4yq-nix-2.0.2";
-  aarch64-linux = "/nix/store/fbgaa3fb2am30klwv4lls44njwqh487a-nix-2.0.2";
-  x86_64-darwin = "/nix/store/hs8mxsvdhm95dxgx943d74fws01j2zj3-nix-2.0.2";
+  x86_64-linux = "/nix/store/8d9zsq17v8f7lgbc5ca6gv438gk1ydqm-nix-2.0.3";
+  i686-linux = "/nix/store/7k7ca4ck24yqinbr9nyl5z2wmcx4l81g-nix-2.0.3";
+  aarch64-linux = "/nix/store/ckmrh426n1swlq9h4d53hvrxjc72avzp-nix-2.0.3";
+  x86_64-darwin = "/nix/store/2jp9d9qns3372hkx4k523hc1bbzkr4yp-nix-2.0.3";
 }
diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 8f503d12935e..076451de31e2 100644
--- a/pkgs/tools/package-management/nix/default.nix
+++ b/pkgs/tools/package-management/nix/default.nix
@@ -133,10 +133,10 @@ in rec {
   }) // { perl-bindings = nixStable; };
 
   nixStable = (common rec {
-    name = "nix-2.0.2";
+    name = "nix-2.0.3";
     src = fetchurl {
       url = "http://nixos.org/releases/nix/${name}/${name}.tar.xz";
-      sha256 = "2d2984410f73d759485526e594ce41b9819fafa4676f4f85a93dbdd5352a1435";
+      sha256 = "4f2f1d624cecac3baf7a026f89e08cf3d01bd6983cc7812bca4178092e436660";
     };
   }) // { perl-bindings = perl-bindings { nix = nixStable; }; };