diff --git a/pkgs/development/python-modules/pygmo/default.nix b/pkgs/development/python-modules/pygmo/default.nix
index b06cb5430064..8bf95203dabc 100644
--- a/pkgs/development/python-modules/pygmo/default.nix
+++ b/pkgs/development/python-modules/pygmo/default.nix
@@ -18,13 +18,13 @@
 
 toPythonModule (stdenv.mkDerivation rec {
   pname = "pygmo";
-  version = "2.18.0";
+  version = "2.19.0";
 
   src = fetchFromGitHub {
     owner = "esa";
     repo = "pygmo2";
-    rev = "v${version}";
-    sha256 = "sha256-he7gxRRJd6bBrD0Z0i+CQTr5JH4P3Im/beNGO+HfmNM=";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-gjmZf66AcNaAMqyLerBgRu5RUzV6qrT7DigTNE39AwI=";
   };
 
   cmakeFlags = [