diff --git a/nixos/modules/installer/tools/nix-fallback-paths.nix b/nixos/modules/installer/tools/nix-fallback-paths.nix
index adde237c07c9..1cfc8ff8612e 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/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";
+  x86_64-linux = "/nix/store/cdcia67siabmj6li7vyffgv2cry86fq8-nix-2.1.3";
+  i686-linux = "/nix/store/6q3xi6y5qnsv7d62b8n00hqfxi8rs2xs-nix-2.1.3";
+  aarch64-linux = "/nix/store/2v93d0vimlm28jg0ms6v1i6lc0fq13pn-nix-2.1.3";
+  x86_64-darwin = "/nix/store/dkjlfkrknmxbjmpfk3dg4q3nmb7m3zvk-nix-2.1.3";
 }
diff --git a/pkgs/tools/package-management/nix/default.nix b/pkgs/tools/package-management/nix/default.nix
index 71c5bd53909f..975d36ddf190 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-2.1.2";
+    name = "nix-2.1.3";
     src = fetchurl {
       url = "http://nixos.org/releases/nix/${name}/${name}.tar.xz";
-      sha256 = "68e55382dac9e66f84ead69b3c786a4ea85d4a6611a7a740aa0b78fcc85db3ec";
+      sha256 = "5d22dad058d5c800d65a115f919da22938c50dd6ba98c5e3a183172d149840a4";
     };
   }) // { perl-bindings = perl-bindings {
     nix = nixStable;