diff --git a/ChangeLog b/ChangeLog
index 26509c52..64969251 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
-Changes in primecount-7.14, 2024-06-19
+Changes in primecount-7.14, 2024-06-20
 
 * int128_t.hpp: Rename namespace port to pstd (portable std namespace).
+* popcnt.hpp: Improve GCC performance on x86 CPUs.
 * Sieve.hpp: Tune AVX512 code.
 * multiarch_avx512_vpopcnt.cmake: Tune AVX512 code.