diff --git a/tests/stdlib_test.cpp b/tests/stdlib_test.cpp
index 3216066..fac9b9b 100644
--- a/tests/stdlib_test.cpp
+++ b/tests/stdlib_test.cpp
@@ -519,7 +519,7 @@
 
 TEST(stdlib, system_NULL) {
   // "The system() function shall always return non-zero when command is NULL."
-  // http://pubs.opengroup.org/onlinepubs/9699919799/functions/system.html
+  // https://pubs.opengroup.org/onlinepubs/9799919799.2024edition/functions/system.html
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wnonnull"
   ASSERT_NE(0, system(nullptr));
diff --git a/tests/wchar_test.cpp b/tests/wchar_test.cpp
index 387d23b..a811fd8 100644
--- a/tests/wchar_test.cpp
+++ b/tests/wchar_test.cpp
@@ -556,7 +556,7 @@
   } else {
     // If the subject sequence begins with a <hyphen-minus>, the value resulting
     // from the conversion shall be negated.
-    // http://pubs.opengroup.org/onlinepubs/9699919799/functions/strtoul.html
+    // https://pubs.opengroup.org/onlinepubs/9799919799.2024edition/functions/strtoul.html
     ASSERT_EQ(std::numeric_limits<T>::max(), fn(min_str, nullptr, 0)) << min_str;
   }
   ASSERT_EQ(std::numeric_limits<T>::max(), fn(max_str, nullptr, 0)) << max_str;