diff --git a/kubernetes-deploy.sh b/kubernetes-deploy.sh
index 2fa3df4..daade8c 100755
--- a/kubernetes-deploy.sh
+++ b/kubernetes-deploy.sh
@@ -1,4 +1,6 @@
-#!/bin/sh
+#!/usr/bin/env bash
+
+cwd=$(cd "${0%/*}"; pwd)
 
 # create 12-factor-app namespace
 kubectl create namespace 12-factor-app
@@ -6,7 +8,7 @@ kubectl create namespace 12-factor-app
 # install OTel Operator
 helm repo add open-telemetry https://open-telemetry.github.io/opentelemetry-helm-charts
 helm repo update
-helm install my-opentelemetry-operator open-telemetry/opentelemetry-operator \
+helm upgrade --install my-opentelemetry-operator open-telemetry/opentelemetry-operator \
   --set "manager.collectorImage.repository=otel/opentelemetry-collector-contrib" \
   --set admissionWebhooks.certManager.enabled=false \
   --namespace opentelemetry \
@@ -15,7 +17,7 @@ helm install my-opentelemetry-operator open-telemetry/opentelemetry-operator \
   --wait
 
 # create OTel collector and instrumentation
-kubectl apply -f otel/.
+kubectl apply -f $cwd/otel/
 
 # install cert-manager OPTIONAL
 helm repo add jetstack https://charts.jetstack.io
@@ -28,32 +30,41 @@ helm upgrade --install \
   --set installCRDs=true \
   --wait
 
-# install jaeger (requires cert-manager) OPTIONAL
 kubectl create namespace observability
+
 helm repo add jaegertracing https://jaegertracing.github.io/helm-charts
 helm repo update
-helm install jaeger jaegertracing/jaeger-operator -n observability --wait
-kubectl apply -f jaeger/.
+helm upgrade --install jaeger jaegertracing/jaeger-operator \
+  --namespace observability \
+  --wait
+kubectl apply -f $cwd/jaeger/.
 
-# install prometheus OPTIONAL
 helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
 helm repo update
-helm install prometheus prometheus-community/kube-prometheus-stack \
+helm upgrade --install prometheus prometheus-community/kube-prometheus-stack \
         --version 51.3.0 \
         --namespace observability \
-        --values prometheus/kube-prometheus-stack-values.yaml \
+        --values $cwd/prometheus/kube-prometheus-stack-values.yaml \
         --wait
-kubectl apply -f ./prometheus/ingress.yaml
+kubectl apply -f $cwd/prometheus/ingress.yaml
 
-# install elastic (requires namespace 'observability') OPTIONAL
 helm repo add elastic https://helm.elastic.co
 helm repo update
-helm install elasticsearch elastic/elasticsearch --version 7.17.3 -n observability --set replicas=1 --wait
-helm install kibana elastic/kibana --version 7.17.3 -n observability --wait
-kubectl apply -f ./fluent/fluentd-config-map.yaml
-kubectl apply -f ./fluent/fluentd-dapr-with-rbac.yaml
+helm upgrade --install elasticsearch elastic/elasticsearch \
+  --version 7.17.3 \
+  --namespace observability \
+  --set replicas=1 \
+  --wait
+
+helm upgrade --install kibana elastic/kibana \
+  --version 7.17.3 \
+  --namespace observability \
+  --wait
+
+kubectl apply -f $cwd/fluent/fluentd-config-map.yaml
+kubectl apply -f $cwd/fluent/fluentd-dapr-with-rbac.yaml
 kubectl wait --for=condition=ready pod --all --timeout=200s -n observability
-kubectl apply -f ./fluent/ingress.yaml
+kubectl apply -f $cwd/fluent/ingress.yaml
 
 # install dapr
 helm repo add dapr https://dapr.github.io/helm-charts/
@@ -65,22 +76,26 @@ helm upgrade --install dapr dapr/dapr \
     --wait
 
 # install dapr dashboard OPTIONAL
-helm install dapr-dashboard dapr/dapr-dashboard --namespace dapr-system --wait
+helm upgrade --install dapr-dashboard dapr/dapr-dashboard \
+  --namespace dapr-system \
+  --wait
 
 # install redis
 helm repo add bitnami https://charts.bitnami.com/bitnami
 helm repo update
-helm install redis bitnami/redis --namespace 12-factor-app --wait
+helm upgrade --install redis bitnami/redis \
+  --namespace 12-factor-app \
+  --wait
 
 # deploy the 12-factor-app
-kubectl apply -f kubernetes/.
+kubectl apply -f $cwd/kubernetes/.
 kubectl wait --for=condition=ready pod --all --timeout=200s -n 12-factor-app
 
 # setup locust for load generation OPTIONAL
 kubectl create configmap my-loadtest-locustfile --from-file locust/main.py -n 12-factor-app
 helm repo add deliveryhero https://charts.deliveryhero.io/
 helm repo update
-helm install locust deliveryhero/locust \
+helm upgrade --install locust deliveryhero/locust \
   --set loadtest.name=my-loadtest \
   --set loadtest.locust_locustfile_configmap=my-loadtest-locustfile \
   --set loadtest.locust_host=http://controller.12-factor-app:3000 \
@@ -88,9 +103,10 @@ helm install locust deliveryhero/locust \
   --set loadtest.environment.LOCUST_AUTOSTART="true" \
   --namespace 12-factor-app \
   --wait
-kubectl apply -f locust/ingress.yaml
+kubectl apply -f $cwd/locust/ingress.yaml
 
 # get redis password (for manual interactions with the redis cli) OPTIONAL
 redis_pwd=$(kubectl get secret redis -n 12-factor-app -o jsonpath='{.data.redis-password}' | base64 --decode)
+
 echo The redis password is $redis_pwd
 echo To authenticate use: redis-cli -a $redis_pwd
\ No newline at end of file