diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2e26862b..5046e821 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1303,6 +1303,7 @@ packages:
         - insert-ordered-containers
         - integer-logarithms
         - JuicyPixels-scale-dct
+        - kleene
         - lattices
         - microstache
         # - monad-http # http-types 0.12
@@ -1315,6 +1316,7 @@ packages:
         - singleton-bool
         - spdx < 0 # GHC 8.4 via base-4.11.0.0
         - splitmix
+        - step-function
         - tdigest
         - these
         - time-parsers