diff --git a/BUILD.gn b/BUILD.gn
index e142f25..4ff40e0 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -104,7 +104,11 @@
       "-Wno-deprecated-declarations",
       # <fuchsia-icu>
       # Disable spurious thread safety errors in umutex.cpp
-      "-Wno-thread-safety"
+      "-Wno-thread-safety",
+      # Can probably remove the below after
+      # https://unicode-org.atlassian.net/projects/ICU/issues/ICU-20869
+      # is fixed.
+      "-Wno-implicit-int-float-conversion",
       # </fuchsia-icu>
     ]
   }