diff --git a/build.sh b/build.sh
index 0bcbf29..f1b9caf 100755
--- a/build.sh
+++ b/build.sh
@@ -44,7 +44,10 @@ for font in \
     subset_ttf="${font%.ttf}-Subset.ttf"
     hb-subset "$font" \
         --output-file="$subset_ttf" \
-        --keep-everything \
+        --text-file=all_chars.txt \
+        --layout-features='*' \
+        --passthrough-tables \
+        --unicodes+="0x0435" # this is the cyrillic e. For some reason, alegreya's ff calt breaks without it
 
     woff2_compress "$subset_ttf"