diff --git a/abra.sh b/abra.sh
index 10aaa5c..2bf76f2 100644
--- a/abra.sh
+++ b/abra.sh
@@ -9,7 +9,7 @@ export LOKI_YML_VERSION=v3
 export PROMETHEUS_YML_VERSION=v2
 export MATRIX_ALERTMANAGER_CONFIG_VERSION=v1
 export MATRIX_ALERTMANAGER_ENTRYPOINT_VERSION=v1
-export GF_ALERTS_NODE_VERSION=v3
+export GF_ALERTS_NODE_VERSION=v4
 export CONFIG_ALLOY_VERSION=v3
 
 # migrates secrets from old names to new names by reading values from the
diff --git a/alerts/node.yml.tmpl b/alerts/node.yml.tmpl
index 244db8c..2f8cf74 100644
--- a/alerts/node.yml.tmpl
+++ b/alerts/node.yml.tmpl
@@ -87,7 +87,7 @@ groups:
           datasourceUid: PBFA97CFB590B2093
           model:
             editorMode: code
-            expr: (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100
+            expr: 100 - ((node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100)
             instant: true
             intervalMs: 1000
             legendFormat: __auto