diff --git a/omero_jupyter/requirements.txt b/omero_jupyter/requirements.txt
index cb85495..788fb70 100644
--- a/omero_jupyter/requirements.txt
+++ b/omero_jupyter/requirements.txt
@@ -18,5 +18,5 @@
 pytest==4.3.1
 pytest-cov==2.6.1
 enum34==1.1.6
-pyyaml==5.1
+pyyaml==5.4
 pandas==0.24.2