diff --git a/build-constraints.yaml b/build-constraints.yaml
index daf62dc8..d97972c7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -178,7 +178,7 @@ packages:
     "Stephan Schiffels <stephan_schiffels@mac.com> @stschiff":
         - sequence-formats
         - pipes-ordered-zip
-        - sequenceTools
+        - sequenceTools < 0 # https://github.com/stschiff/sequenceTools/issues/32
 
     "YongJoon Joe <developer@quietjoon.net> @QuietJoon":
         - doldol