diff --git a/bob/devtools/data/conda_build_config.yaml b/bob/devtools/data/conda_build_config.yaml
index d340b962c19a995e46af3bef48754bace725317a..a3ac9852bc6821f6927b7a0c76752fd21b492d22 100644
--- a/bob/devtools/data/conda_build_config.yaml
+++ b/bob/devtools/data/conda_build_config.yaml
@@ -102,7 +102,7 @@ libtiff:
 mkl:
   - 2019.1
 openfst:
-  - 1.6.1
+  - 1.6.7
 sox:
   - 14.4.2
 speex: