diff --git a/conda/bob-devel/meta.yaml b/conda/bob-devel/meta.yaml
index 7328d95887bd8447de2281526215c5c27bcb0c64..d7b5e33d50b5f290439c622208ae2b2d6543600f 100644
--- a/conda/bob-devel/meta.yaml
+++ b/conda/bob-devel/meta.yaml
@@ -39,7 +39,7 @@ requirements:
     - jpeg 9b
     - kaldi 2017.03.13  # [linux]
     - libblitz 1.0.1
-    - libmatio 1.5.11
+    - libmatio 1.5.6
     - libogg 1.3.2
     - libpng 1.6.35
     - libsvm 3.22