diff --git a/deploy/kubernetes/chart/files/logstash/10-stats.conf b/deploy/kubernetes/chart/files/logstash/10-stats.conf
index 344f01da..32b72a19 100644
--- a/deploy/kubernetes/chart/files/logstash/10-stats.conf
+++ b/deploy/kubernetes/chart/files/logstash/10-stats.conf
@@ -12,10 +12,18 @@ filter {
     if [user_agent] =~ "^kube-probe" {
         drop { }
     }
+    # Drop HEAD requests
+    if [method] == "HEAD" {
+        drop { }
+    }
     # Only consider file downloads and OPeNDAP accesses
     if [request] !~ "^/thredds/(fileServer|dodsC)" {
         drop { }
     }
+    # Drop extraneous OPeNDAP requests
+    if [request] =~ "^/thredds/dodsC/([\?].*)\.(html|nc|dds|das)" {
+        drop { }
+    }
     # Replace the logstash timestamp with the timestamp from the request
     date {
         match => ["request_time", "dd/MMM/yyyy:HH:mm:ss Z"]
diff --git a/images/logstash/Dockerfile b/images/logstash/Dockerfile
index bee82151..9739bc93 100644
--- a/images/logstash/Dockerfile
+++ b/images/logstash/Dockerfile
@@ -25,7 +25,7 @@ COPY logstash.repo /etc/yum.repos.d/logstash.repo
 # So SHA1 needs to be enabled to install it.
 RUN update-crypto-policies --set DEFAULT:SHA1
 RUN dnf makecache && \
-    dnf install -y logstash-7.10.0 && \
+    dnf install -y logstash && \
     dnf clean all && \
     chown -R $ESGF_UID:$ESGF_GID /usr/share/logstash