diff --git a/libstdc++-v3/testsuite/std/time/clock/file/io.cc b/libstdc++-v3/testsuite/std/time/clock/file/io.cc
index c3ac6cf4d6d742c63873d85f42dd7f2243bf7848..39eb0dbcf51b496d83e08d47506afc5040193dfb 100644
--- a/libstdc++-v3/testsuite/std/time/clock/file/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/file/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/clock/gps/io.cc b/libstdc++-v3/testsuite/std/time/clock/gps/io.cc
index eac1c13c63af05ff51c34a029c0262b3a666ac79..6f4544fcd97c4f4f4e56945a70dc09cb45ebf75e 100644
--- a/libstdc++-v3/testsuite/std/time/clock/gps/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/gps/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/time/clock/local/io.cc b/libstdc++-v3/testsuite/std/time/clock/local/io.cc
index b16ddbab90b4cd243d394e6a5f2570d8aad70a35..bb682cd40cfc983b154e7e2811c036dc3998e483 100644
--- a/libstdc++-v3/testsuite/std/time/clock/local/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/local/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/time/clock/system/io.cc b/libstdc++-v3/testsuite/std/time/clock/system/io.cc
index d0962353c2915ac1a8a9edd30926f921add74096..2cc116156f2ecb787fe7b2f22246e0bda51676c5 100644
--- a/libstdc++-v3/testsuite/std/time/clock/system/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/system/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>
diff --git a/libstdc++-v3/testsuite/std/time/clock/tai/io.cc b/libstdc++-v3/testsuite/std/time/clock/tai/io.cc
index 0c5b5872d0c41eea5680a05b4f282813bcde71f7..0fd61c0e612f95f4112c190adb94417f41fcf8f5 100644
--- a/libstdc++-v3/testsuite/std/time/clock/tai/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/tai/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <format>
diff --git a/libstdc++-v3/testsuite/std/time/clock/utc/io.cc b/libstdc++-v3/testsuite/std/time/clock/utc/io.cc
index f39eb3f3e8e638cf9b80da5d8b7f97660a9e299f..58e358f3dbf471768839b9ea6fbbed3582f76e59 100644
--- a/libstdc++-v3/testsuite/std/time/clock/utc/io.cc
+++ b/libstdc++-v3/testsuite/std/time/clock/utc/io.cc
@@ -1,4 +1,5 @@
 // { dg-do run { target c++20 } }
+// { dg-timeout-factor 2 }
 
 #include <chrono>
 #include <sstream>