diff --git a/gitlab/conda_build_config.yaml b/gitlab/conda_build_config.yaml
index 96251fbf157187fedb92da43800fc5b1b8ad3c2a..d5353473aa90d4e01f30f0aaabc8b163f2ad939a 100644
--- a/gitlab/conda_build_config.yaml
+++ b/gitlab/conda_build_config.yaml
@@ -10,7 +10,7 @@ gcc:
 libgcc:
   - 4.8.5
 toolchain:
-  - 2.3.2
+  - 2.4.0
 boost:
   - 1.61
 libblitz:
@@ -65,7 +65,7 @@ pin_run_as_build:
   hdf5:
     max_pin: x.x.x
   libmatio:
-    max_pin: x.x
+    max_pin: x.x.x
   ffmpeg:
     max_pin: x.x
   vlfeat: