试图安装php gd扩展php55-与php-common-5.3的常见冲突

我正在尝试使用此命令在php5.5 amazon ec2服务器上安装php gd扩展

yum install php-gd

日志:

Loaded plugins: priorities, update-motd, upgrade-helper
Resolving Dependencies
--> Running transaction check
---> Package php-gd.x86_64 0:5.3.28-1.5.amzn1 will be installed
--> Processing Dependency: php-common(x86-64) = 5.3.28-1.5.amzn1 for package: php-gd-5.3.28-1.5.amzn1.x86_64
--> Processing Dependency: libXpm.so.4()(64bit) for package: php-gd-5.3.28-1.5.amzn1.x86_64
--> Processing Dependency: libt1.so.5()(64bit) for package: php-gd-5.3.28-1.5.amzn1.x86_64
--> Running transaction check
---> Package libXpm.x86_64 0:3.5.10-2.9.amzn1 will be installed
---> Package php-common.x86_64 0:5.3.28-1.5.amzn1 will be installed
---> Package t1lib.x86_64 0:5.1.2-6.5.amzn1 will be installed
--> Processing Conflict: php55-common-5.5.14-1.75.amzn1.x86_64 conflicts php-common < 5.5.14-1.75.amzn1
--> Finished Dependency Resolution
Error: php55-common conflicts with php-common-5.3.28-1.5.amzn1.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

我试着这样做

 sudo yum remove php-common
 sudo yum install php55

但没有改变