diff --git a/install.sh b/install.sh
index 755ecd7..e5a1ed8 100644
--- a/install.sh
+++ b/install.sh
@@ -170,6 +170,7 @@ dependency_install(){
     ${INS} -y haveged
     judge "haveged 安装"
 
+    sed -i -r '/^HRNGDEVICE/d;/#HRNGDEVICE=\/dev\/null/a HRNGDEVICE=/dev/urandom' /etc/default/rng-tools
 
     if [[ "${ID}" == "centos" ]];then
        systemctl start rngd && systemctl enable rngd
diff --git a/install_h2.sh b/install_h2.sh
index d599e0e..cec4f97 100644
--- a/install_h2.sh
+++ b/install_h2.sh
@@ -178,6 +178,8 @@ dependency_install(){
     ${INS} -y haveged
     judge "haveged 安装"
 
+    sed -i -r '/^HRNGDEVICE/d;/#HRNGDEVICE=\/dev\/null/a HRNGDEVICE=/dev/urandom' /etc/default/rng-tools
+
     if [[ "${ID}" == "centos" ]];then
        systemctl start rngd && systemctl enable rngd
        systemctl start haveged && systemctl enable haveged