diff --git a/stable/mongodb-replicaset/Chart.yaml b/stable/mongodb-replicaset/Chart.yaml
index 2bcd5ee1a8..58ee74543b 100644
--- a/stable/mongodb-replicaset/Chart.yaml
+++ b/stable/mongodb-replicaset/Chart.yaml
@@ -1,6 +1,6 @@
 name: mongodb-replicaset
 home: https://github.com/mongodb/mongo
-version: 3.8.5
+version: 3.8.6
 appVersion: 3.6
 description: NoSQL document-oriented database that stores JSON-like documents with
   dynamic schemas, simplifying the integration of data in content-driven applications.
diff --git a/stable/mongodb-replicaset/templates/mongodb-statefulset.yaml b/stable/mongodb-replicaset/templates/mongodb-statefulset.yaml
index 63ee52980e..0952334ab9 100644
--- a/stable/mongodb-replicaset/templates/mongodb-statefulset.yaml
+++ b/stable/mongodb-replicaset/templates/mongodb-statefulset.yaml
@@ -229,12 +229,12 @@ spec:
             - sh
             - -ec
             - >-
-            {{- if .Values.auth.enabled }}
-              export MONGODB_URL=mongodb://$METRICS_USER:$METRICS_PASSWORD@localhost:{{ .Values.port }};
-            {{- else }}
-              export MONGODB_URL=mongodb://localhost:{{ .Values.port }};
-            {{- end }}
               /bin/mongodb_exporter
+            {{- if .Values.auth.enabled }}
+              -mongodb.uri mongodb://$METRICS_USER:$METRICS_PASSWORD@localhost:{{ .Values.port }}
+            {{- else }}
+              -mongodb.uri mongodb://localhost:{{ .Values.port }}
+            {{- end }}
             {{- if .Values.tls.enabled }}
               -mongodb.tls
               -mongodb.tls-ca=/ca/tls.crt
@@ -277,12 +277,12 @@ spec:
                 - sh
                 - -ec
                 - >-
-                {{- if .Values.auth.enabled }}
-                  export MONGODB_URL=mongodb://$METRICS_USER:$METRICS_PASSWORD@localhost:{{ .Values.port }};
-                {{- else }}
-                  export MONGODB_URL=mongodb://localhost:{{ .Values.port }};
-                {{- end }}
                   /bin/mongodb_exporter
+                {{- if .Values.auth.enabled }}
+                  -mongodb.uri mongodb://$METRICS_USER:$METRICS_PASSWORD@localhost:{{ .Values.port }}
+                {{- else }}
+                  -mongodb.uri mongodb://localhost:{{ .Values.port }}
+                {{- end }}
                 {{- if .Values.tls.enabled }}
                   -mongodb.tls
                   -mongodb.tls-ca=/ca/tls.crt
diff --git a/stable/mongodb-replicaset/tests/mongodb-up-test.sh b/stable/mongodb-replicaset/tests/mongodb-up-test.sh
index 39e64218c8..c43bad2d59 100644
--- a/stable/mongodb-replicaset/tests/mongodb-up-test.sh
+++ b/stable/mongodb-replicaset/tests/mongodb-up-test.sh
@@ -26,7 +26,7 @@ replicas() {
 master_pod() {
     for ((i = 0; i < $(replicas); ++i)); do
         response=$(mongo $MONGOARGS "--host=$(pod_name "$i")" "--eval=rs.isMaster().ismaster")
-        if [[ "$response" =~ "true" ]]; then
+        if [[ "$response" == "true" ]]; then
             pod_name "$i"
             break
         fi
@@ -64,7 +64,7 @@ setup() {
 
 @test "Write key to primary" {
     response=$(mongo $MONGOARGS --host=$(master_pod) "--eval=db.test.insert({\"abc\": \"def\"}).nInserted")
-    if [[ ! "$response" =~ "1" ]]; then
+    if [[ ! "$response" -eq 1 ]]; then
         exit 1
     fi
 }