diff --git a/pkgs/by-name/op/openmm/package.nix b/pkgs/by-name/op/openmm/package.nix
index e76046dd84cb..f63175e4e7a8 100644
--- a/pkgs/by-name/op/openmm/package.nix
+++ b/pkgs/by-name/op/openmm/package.nix
@@ -20,13 +20,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "openmm";
-  version = "8.3.1";
+  version = "8.4.0";
 
   src = fetchFromGitHub {
     owner = "openmm";
     repo = "openmm";
     rev = finalAttrs.version;
-    hash = "sha256-3e0+8f2V+UCrPJA1wQUZKPvjpmWU9FfOAt9Ako0Lnl0=";
+    hash = "sha256-vD0daqhEwiM+OMqW//mpc3p6ho/TI2muA6VopXyLYVE=";
   };
 
   # "This test is stochastic and may occasionally fail". It does.