diff --git a/tests/fuzzer/imageio_fuzzer.cc b/tests/fuzzer/imageio_fuzzer.cc
index 0e2b5beb..600c78a2 100644
--- a/tests/fuzzer/imageio_fuzzer.cc
+++ b/tests/fuzzer/imageio_fuzzer.cc
@@ -20,6 +20,7 @@
 #include <cstdint>
 #include <cstdlib>
 #include <iostream>
+#include <string_view>
 
 #include "imageio/image_dec.h"
 #include "imageio/metadata.h"
diff --git a/tests/fuzzer/webp_info_fuzzer.cc b/tests/fuzzer/webp_info_fuzzer.cc
index 6316f7b0..3b1c7f2e 100644
--- a/tests/fuzzer/webp_info_fuzzer.cc
+++ b/tests/fuzzer/webp_info_fuzzer.cc
@@ -15,6 +15,7 @@
 ////////////////////////////////////////////////////////////////////////////////
 
 #include <cstdint>
+#include <string_view>
 
 #include "src/webp/mux_types.h"
 #include "tests/fuzzer/fuzz_utils.h"