diff --git a/containers/Singularity/centos-8.def b/containers/Singularity/centos-8.def
index 6935d10a..bb7ca7d8 100644
--- a/containers/Singularity/centos-8.def
+++ b/containers/Singularity/centos-8.def
@@ -14,4 +14,11 @@ Include: dnf
     shadow-utils rsyslog tzdata util-linux words zlib tar less \
     gzip which util-linux openssh-clients openssh-server dhclient \
     pciutils vim-minimal shadow-utils strace cronie crontabs cpio \
-    wget centos-release ipmitool yum
+    wget centos-release ipmitool yum NetworkManager network-scripts
+
+    systemctl disable NetworkManager
+    systemctl disable NetworkManager-dispatcher
+    systemctl disable NetworkManager-wait-online
+    systemctl enable network-scripts
+    
+    touch /etc/sysconfig/disable-deprecation-warnings
\ No newline at end of file
diff --git a/containers/Singularity/rocky-8.def b/containers/Singularity/rocky-8.def
index f4050036..6daa14e0 100644
--- a/containers/Singularity/rocky-8.def
+++ b/containers/Singularity/rocky-8.def
@@ -14,4 +14,11 @@ Include: dnf
     shadow-utils rsyslog tzdata util-linux words zlib tar less \
     gzip which util-linux openssh-clients openssh-server dhclient \
     pciutils vim-minimal shadow-utils strace cronie crontabs cpio \
-    wget rocky-release ipmitool yum NetworkManager
\ No newline at end of file
+    wget rocky-release ipmitool yum NetworkManager network-scripts
+
+    systemctl disable NetworkManager
+    systemctl disable NetworkManager-dispatcher
+    systemctl disable NetworkManager-wait-online
+    systemctl enable network-scripts
+    
+    touch /etc/sysconfig/disable-deprecation-warnings
\ No newline at end of file