diff --git a/install-php-extensions b/install-php-extensions
index c7bf734..a23d491 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -1409,10 +1409,20 @@ installOracleInstantClient() {
 			installOracleInstantClient_sdk=https://download.oracle.com/otn_software/linux/instantclient/199000/instantclient-sdk-linux-$installOracleInstantClient_version.0.0.0dbru.zip
 			;;
 		*)
-			installOracleInstantClient_client=client64
-			installOracleInstantClient_version='21.1'
-			installOracleInstantClient_ic=https://download.oracle.com/otn_software/linux/instantclient/211000/instantclient-basic-linux.x64-$installOracleInstantClient_version.0.0.0.zip
-			installOracleInstantClient_sdk=https://download.oracle.com/otn_software/linux/instantclient/211000/instantclient-sdk-linux.x64-$installOracleInstantClient_version.0.0.0.zip
+			case $(uname -m) in
+				aarch64*)
+					installOracleInstantClient_client=client64
+					installOracleInstantClient_version='19.10'
+					installOracleInstantClient_ic=https://download.oracle.com/otn_software/linux/instantclient/191000/instantclient-basic-linux.arm64-$installOracleInstantClient_version.0.0.0dbru.zip
+					installOracleInstantClient_sdk=https://download.oracle.com/otn_software/linux/instantclient/191000/instantclient-sdk-linux.arm64-$installOracleInstantClient_version.0.0.0dbru.zip
+					;;
+				*)
+					installOracleInstantClient_client=client64
+					installOracleInstantClient_version='21.1'
+					installOracleInstantClient_ic=https://download.oracle.com/otn_software/linux/instantclient/211000/instantclient-basic-linux.x64-$installOracleInstantClient_version.0.0.0.zip
+					installOracleInstantClient_sdk=https://download.oracle.com/otn_software/linux/instantclient/211000/instantclient-sdk-linux.x64-$installOracleInstantClient_version.0.0.0.zip
+					;;
+			esac
 			;;
 	esac
 	ORACLE_INSTANTCLIENT_LIBPATH=/usr/lib/oracle/$installOracleInstantClient_version/$installOracleInstantClient_client/lib