diff --git a/pkgs/applications/science/math/primecount/default.nix b/pkgs/applications/science/math/primecount/default.nix
index ee6b781d7d3f..6b050f0f4fce 100644
--- a/pkgs/applications/science/math/primecount/default.nix
+++ b/pkgs/applications/science/math/primecount/default.nix
@@ -7,13 +7,13 @@
 
 stdenv.mkDerivation rec {
   pname = "primecount";
-  version = "7.7";
+  version = "7.8";
 
   src = fetchFromGitHub {
     owner = "kimwalisch";
     repo = "primecount";
     rev = "v${version}";
-    hash = "sha256-6Q9DPnlGKb31QYEGpm78ISfbj90MeLD0/2k2fDZm7cM=";
+    hash = "sha256-yKk+zXvA/MI7y9gCMwJNYHRYIYgeWyJHjyPi1uNWVnM=";
   };
 
   nativeBuildInputs = [