diff --git a/install-php-extensions b/install-php-extensions
index aec98dc..b43e6e2 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -2957,6 +2957,9 @@ installRemoteModule() {
 			if test -z "$installRemoteModule_version"; then
 				if test $PHP_MAJMIN_VERSION -le 506; then
 					installRemoteModule_version=3.12.4
+				else
+					# see https://github.com/protocolbuffers/protobuf/issues/10619
+					installRemoteModule_version=3.21.6
 				fi
 			fi
 			;;