diff --git a/build-constraints.yaml b/build-constraints.yaml
index 43e9c91e..713a824e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -244,7 +244,7 @@ packages:
     "Stephan Schiffels <stephan_schiffels@mac.com> @stschiff":
         - sequence-formats
         - pipes-ordered-zip
-        - sequenceTools
+        - sequenceTools < 0 # https://github.com/stschiff/sequenceTools/issues/37
 
     "YongJoon Joe <developer@quietjoon.net> @QuietJoon":
         - doldol