diff --git a/pkgs/applications/science/biology/samtools/default.nix b/pkgs/applications/science/biology/samtools/default.nix
index 7c85513bd8e..9535609fa78 100644
--- a/pkgs/applications/science/biology/samtools/default.nix
+++ b/pkgs/applications/science/biology/samtools/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   name = "samtools-${version}";
-  version = "1.3";
+  version = "1.3.1";
 
   src = fetchurl {
     url = "https://github.com/samtools/samtools/releases/download/${version}/${name}.tar.bz2";
-    sha256 = "03mnf0mhbfwhqlqfslrhfnw68s3g0fs1as354i9a584mqw1l1smy";
+    sha256 = "0znnnxc467jbf1as2dpskrjhfh8mbll760j6w6rdkwlwbqsp8gbc";
   };
 
   buildInputs = [ zlib ncurses ];