diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix
index 56a13d6787a7..774c1b700c69 100644
--- a/pkgs/build-support/vm/default.nix
+++ b/pkgs/build-support/vm/default.nix
@@ -1781,22 +1781,22 @@ rec {
     };
 
     debian8i386 = {
-      name = "debian-8.3-jessie-i386";
-      fullName = "Debian 8.3 Jessie (i386)";
+      name = "debian-8.4-jessie-i386";
+      fullName = "Debian 8.4 Jessie (i386)";
       packagesList = fetchurl {
         url = mirror://debian/dists/jessie/main/binary-i386/Packages.xz;
-        sha256 = "1240d404bd99afbeec042c08fdab049f0b5a984a393cac7c221553ab08f637f5";
+        sha256 = "1j8swc1nzsi20vbcmya2sv0fzcnz7lhwb32lxabgcwm3xlkzlg58";
       };
       urlPrefix = mirror://debian;
       packages = commonDebianPackages;
     };
 
     debian8x86_64 = {
-      name = "debian-8.3-jessie-amd64";
-      fullName = "Debian 8.3 Jessie (amd64)";
+      name = "debian-8.4-jessie-amd64";
+      fullName = "Debian 8.4 Jessie (amd64)";
       packagesList = fetchurl {
         url = mirror://debian/dists/jessie/main/binary-amd64/Packages.xz;
-        sha256 = "ec937c1b3bbfe4803f0fa43681b19d089eb6b355455ac7caa17ec8e9ff604e56";
+        sha256 = "0kipisyjkhczghzqj4a8y1n4az9c4c8lsj8sw7js13b053lpj6ga";
       };
       urlPrefix = mirror://debian;
       packages = commonDebianPackages;