diff --git a/pkgs/development/python-modules/pybigwig/default.nix b/pkgs/development/python-modules/pybigwig/default.nix
index be54a38cd996..cb1764b23b04 100644
--- a/pkgs/development/python-modules/pybigwig/default.nix
+++ b/pkgs/development/python-modules/pybigwig/default.nix
@@ -8,11 +8,11 @@
 
 buildPythonPackage rec {
   pname = "pyBigWig";
-  version = "0.3.17";
+  version = "0.3.18";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "157x6v48y299zm382krf1dw08fdxg95im8lnabhp5vc94s04zxj1";
+    sha256 = "4c2a8c571b4100ad7c4c318c142eb48558646be52aaab28215a70426f5be31bc";
   };
 
   buildInputs = [ zlib ];