diff --git a/vertical-pod-autoscaler/docs/flags.md b/vertical-pod-autoscaler/docs/flags.md
index 3fe9e675c6..6981b49f4b 100644
--- a/vertical-pod-autoscaler/docs/flags.md
+++ b/vertical-pod-autoscaler/docs/flags.md
@@ -36,7 +36,7 @@ This document is auto-generated from the flag definitions in the VPA admission-c
 | `--tls-cert-file` | "/etc/tls-certs/serverCert.pem" |                   Path to server certificate PEM file. |
 | `--tls-ciphers` |  |                     A comma-separated or colon-separated list of ciphers to accept.  Only works when min-tls-version is set to tls1_2. |
 | `--tls-private-key` | "/etc/tls-certs/serverKey.pem" |                 Path to server certificate key PEM file. |
-| `--v` |  | Set the log level verbosity |
+| `--v` | 4 | Set the log level verbosity |
 | `--vmodule` |  |                     comma-separated list of pattern=N settings for file-filtered logging |
 | `--vpa-object-namespace` |  |            Specifies the namespace to search for VPA objects. Leave empty to include all namespaces. If provided, the garbage collector will only clean this namespace. |
 | `--webhook-address` |  |                 Address under which webhook is registered. Used when registerByURL is set to true. |
@@ -121,7 +121,7 @@ This document is auto-generated from the flag definitions in the VPA recommender
 | `--target-memory-percentile` | 0.9 |                         Memory usage percentile that will be used as a base for memory target recommendation. Doesn't affect memory lower bound nor memory upper bound. |
 | `--use-external-metrics` |  |                                   ALPHA.  Use an external metrics provider instead of metrics_server. |
 | `--username` |  |                                        The username used in the prometheus server basic auth |
-| `--v` |  | Set the log level verbosity |
+| `--v` | 4 | Set the log level verbosity |
 | `--vmodule` |  |                                     comma-separated list of pattern=N settings for file-filtered logging |
 | `--vpa-object-namespace` |  |                            Specifies the namespace to search for VPA objects. Leave empty to include all namespaces. If provided, the garbage collector will only clean this namespace. |
 
@@ -163,7 +163,7 @@ This document is auto-generated from the flag definitions in the VPA updater cod
 | `--stderrthreshold` |  |                                        set the log level threshold for writing to standard error |
 | `--updater-interval` | 1m0s |                                       How often updater should run |
 | `--use-admission-controller-status` | true |                                 If true, updater will only evict pods when admission controller status is valid. |
-| `--v` |  | Set the log level verbosity |
+| `--v` | 4 | Set the log level verbosity |
 | `--vmodule` |  |                                              comma-separated list of pattern=N settings for file-filtered logging |
 | `--vpa-object-namespace` |  |                                     Specifies the namespace to search for VPA objects. Leave empty to include all namespaces. If provided, the garbage collector will only clean this namespace. |
 
diff --git a/vertical-pod-autoscaler/hack/generate-flags.sh b/vertical-pod-autoscaler/hack/generate-flags.sh
index c94152d09e..a0d8def26f 100755
--- a/vertical-pod-autoscaler/hack/generate-flags.sh
+++ b/vertical-pod-autoscaler/hack/generate-flags.sh
@@ -43,7 +43,7 @@ extract_flags() {
         if [[ $line == *"-v, --v Level"* ]]; then
             # Special handling for the -v, --v Level flag
             flag="v"
-            default=$(echo "$line" | sed -n 's/.*default: \([0-9]\+\).*/\1/p')
+            default=$(echo "$line" | sed -n 's/.*default: \([0-9]\{1,\}\).*/\1/p')
             description="Set the log level verbosity"
         else
             flag=$(echo "$line" | awk '{print $1}' | sed 's/^-*//;s/=.*$//')