diff --git a/pkgs/applications/science/machine-learning/shogun/default.nix b/pkgs/applications/science/machine-learning/shogun/default.nix
index fdaec82490db..d25bc06385ea 100644
--- a/pkgs/applications/science/machine-learning/shogun/default.nix
+++ b/pkgs/applications/science/machine-learning/shogun/default.nix
@@ -136,6 +136,8 @@ stdenv.mkDerivation rec {
     excludeTestsRegex = lib.concatStringsSep "|" [
       # sporadic segfault
       "TrainedModelSerialization"
+      # broken by openblas 0.3.21
+      "mathematics_lapack"
       # these take too long on CI
       "evaluation_cross_validation"
       "modelselection_combined_kernel"