diff --git a/contrib/completions/bash/oc b/contrib/completions/bash/oc
index bfb72a74276b..76ff7b1deb94 100644
--- a/contrib/completions/bash/oc
+++ b/contrib/completions/bash/oc
@@ -2454,6 +2454,8 @@ _oc_adm_drain()
     local_nonpersistent_flags+=("--grace-period=")
     flags+=("--ignore-daemonsets")
     local_nonpersistent_flags+=("--ignore-daemonsets")
+    flags+=("--pod-selector=")
+    local_nonpersistent_flags+=("--pod-selector=")
     flags+=("--selector=")
     two_word_flags+=("-l")
     local_nonpersistent_flags+=("--selector=")
diff --git a/contrib/completions/zsh/oc b/contrib/completions/zsh/oc
index 002856bd7b92..1558805c9c33 100644
--- a/contrib/completions/zsh/oc
+++ b/contrib/completions/zsh/oc
@@ -2596,6 +2596,8 @@ _oc_adm_drain()
     local_nonpersistent_flags+=("--grace-period=")
     flags+=("--ignore-daemonsets")
     local_nonpersistent_flags+=("--ignore-daemonsets")
+    flags+=("--pod-selector=")
+    local_nonpersistent_flags+=("--pod-selector=")
     flags+=("--selector=")
     two_word_flags+=("-l")
     local_nonpersistent_flags+=("--selector=")