diff --git a/build-constraints.yaml b/build-constraints.yaml
index ce4621a7..fedef888 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1167,6 +1167,12 @@ packages:
         # https://github.com/fpco/stackage/issues/659
         - pandoc < 1.15
 
+        # https://github.com/fpco/stackage/issues/664
+        - fast-logger < 2.4
+
+        # https://github.com/fpco/stackage/issues/665
+        - iproute < 1.5
+
 # Package flags are applied to individual packages, and override the values of
 # global-flags
 package-flags: