diff --git a/install-php-extensions b/install-php-extensions
index b37e30e..2d3f60f 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -2984,7 +2984,7 @@ installRemoteModule() {
 					installRemoteModule_distro=linux
 					;;
 			esac
-			installRemoteModule_tmp2=$(php -r 'echo PHP_MAJOR_VERSION . PHP_MINOR_VERSION;')
+			installRemoteModule_tmp2=$(php -r 'echo PHP_MAJOR_VERSION . PHP_MINOR_VERSION . (ZEND_THREAD_SAFE ? "-zts" : "");')
 			installRemoteModule_tmp="$(mktemp -p /tmp/src -d)"
 			cd "$installRemoteModule_tmp"
 			curl -sSLf --user-agent Docker https://blackfire.io/api/v1/releases/probe/php/$installRemoteModule_distro/$installRemoteModule_tmp1/$installRemoteModule_tmp2 | tar xz