diff --git a/projects/h2o/build.sh b/projects/h2o/build.sh
index 96c10de64..22b655d02 100755
--- a/projects/h2o/build.sh
+++ b/projects/h2o/build.sh
@@ -22,6 +22,7 @@ cp ./h2o-fuzzer-* $OUT/
 
 zip -jr $OUT/h2o-fuzzer-http1_seed_corpus.zip $SRC/h2o/fuzz/http1-corpus
 zip -jr $OUT/h2o-fuzzer-http2_seed_corpus.zip $SRC/h2o/fuzz/http2-corpus
+zip -jr $OUT/h2o-fuzzer-http3_seed_corpus.zip $SRC/h2o/fuzz/http3-corpus
 zip -jr $OUT/h2o-fuzzer-url_seed_corpus.zip $SRC/h2o/fuzz/url-corpus
 
 cp $SRC/*.options $SRC/h2o/fuzz/*.dict $OUT/
diff --git a/projects/h2o/h2o-fuzzer-http3.options b/projects/h2o/h2o-fuzzer-http3.options
new file mode 100644
index 000000000..97ff13ba7
--- /dev/null
+++ b/projects/h2o/h2o-fuzzer-http3.options
@@ -0,0 +1,4 @@
+[libfuzzer]
+close_fd_mask = 3
+max_len = 16384
+dict = http.dict