diff --git a/build-constraints.yaml b/build-constraints.yaml
index 1e5d0b9f..ccad3e52 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -42,6 +42,8 @@ packages:
         - lens-regex-pcre < 0 # via pcre-heavy
 
     "Emily Pillmore <emilypi@cohomolo.gy> @topos":
+        - base64
+        - base64-lens
         - lens-process < 0 # via lens-4.18.1
         - microlens-process
         - nonempty-vector