diff --git a/bitnami/redis/CHANGELOG.md b/bitnami/redis/CHANGELOG.md
index e23ecefaf03d9b..59f435115be869 100644
--- a/bitnami/redis/CHANGELOG.md
+++ b/bitnami/redis/CHANGELOG.md
@@ -1,8 +1,8 @@
 # Changelog
 
-## 20.13.3 (2025-04-28)
+## 20.13.4 (2025-04-29)
 
-* [bitnami/redis] Release 20.13.3 ([#33217](https://github.com/bitnami/charts/pull/33217))
+* [bitnami/redis] Switch shell from /bin/sh to /bin/bash to improve process handling ([#33181](https://github.com/bitnami/charts/pull/33181))
 
 ## <small>20.13.2 (2025-04-24)</small>
 
diff --git a/bitnami/redis/Chart.yaml b/bitnami/redis/Chart.yaml
index b4d28b0e1ff576..ec2f2836d8f1a0 100644
--- a/bitnami/redis/Chart.yaml
+++ b/bitnami/redis/Chart.yaml
@@ -37,4 +37,4 @@ maintainers:
 name: redis
 sources:
 - https://github.com/bitnami/charts/tree/main/bitnami/redis
-version: 20.13.3
+version: 20.13.4
diff --git a/bitnami/redis/templates/master/application.yaml b/bitnami/redis/templates/master/application.yaml
index e310c1893dab50..d6df9358884d16 100644
--- a/bitnami/redis/templates/master/application.yaml
+++ b/bitnami/redis/templates/master/application.yaml
@@ -133,7 +133,7 @@ spec:
           args: {{- include "common.tplvalues.render" (dict "value" .Values.master.args "context" $) | nindent 12 }}
           {{- else }}
           args:
-            - -c
+            - -ec
             - /opt/bitnami/scripts/start-scripts/start-master.sh
           {{- end }}
           env:
@@ -215,8 +215,8 @@ spec:
             failureThreshold: {{ .Values.master.livenessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_liveness_local.sh {{ .Values.master.livenessProbe.timeoutSeconds }}
           {{- end }}
           {{- if .Values.master.customReadinessProbe }}
@@ -230,8 +230,8 @@ spec:
             failureThreshold: {{ .Values.master.readinessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_readiness_local.sh {{ .Values.master.readinessProbe.timeoutSeconds }}
           {{- end }}
           {{- end }}
@@ -288,7 +288,7 @@ spec:
           {{- else }}
           command:
             - /bin/bash
-            - -c
+            - -ec
             - |
               {{- if and .Values.auth.enabled .Values.auth.usePasswordFiles }}
               export REDIS_PASSWORD="$(< $REDIS_PASSWORD_FILE)"
diff --git a/bitnami/redis/templates/replicas/application.yaml b/bitnami/redis/templates/replicas/application.yaml
index 7301b5330b7160..54b527c47b2ba5 100644
--- a/bitnami/redis/templates/replicas/application.yaml
+++ b/bitnami/redis/templates/replicas/application.yaml
@@ -133,7 +133,7 @@ spec:
           args: {{- include "common.tplvalues.render" (dict "value" .Values.replica.args "context" $) | nindent 12 }}
           {{- else }}
           args:
-            - -c
+            - -ec
             - /opt/bitnami/scripts/start-scripts/start-replica.sh
           {{- end }}
           env:
@@ -235,8 +235,8 @@ spec:
             failureThreshold: {{ .Values.replica.livenessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_liveness_local_and_master.sh {{ .Values.replica.livenessProbe.timeoutSeconds }}
           {{- end }}
           {{- if .Values.replica.customReadinessProbe }}
@@ -250,8 +250,8 @@ spec:
             failureThreshold: {{ .Values.replica.readinessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_readiness_local_and_master.sh {{ .Values.replica.readinessProbe.timeoutSeconds }}
           {{- end }}
           {{- end }}
@@ -308,7 +308,7 @@ spec:
           {{- else }}
           command:
             - /bin/bash
-            - -c
+            - -ec
             - |
               {{- if and .Values.auth.enabled .Values.auth.usePasswordFiles }}
               export REDIS_PASSWORD="$(< $REDIS_PASSWORD_FILE)"
diff --git a/bitnami/redis/templates/sentinel/statefulset.yaml b/bitnami/redis/templates/sentinel/statefulset.yaml
index a3d83448cbedac..367750d502a09b 100644
--- a/bitnami/redis/templates/sentinel/statefulset.yaml
+++ b/bitnami/redis/templates/sentinel/statefulset.yaml
@@ -120,7 +120,7 @@ spec:
               exec:
                 command:
                   - /bin/bash
-                  - -c
+                  - -ec
                   - /opt/bitnami/scripts/start-scripts/prestop-redis.sh
           {{- end }}
           {{- end }}
@@ -132,7 +132,7 @@ spec:
           {{- else if .Values.replica.command }}
           command: {{- include "common.tplvalues.render" (dict "value" .Values.replica.command "context" $) | nindent 12 }}
           {{- else }}
-          command: ['/bin/bash', '-c']
+          command: ['/bin/bash', '-ec']
           {{- end }}
           {{- if .Values.diagnosticMode.enabled }}
           args: {{- include "common.tplvalues.render" (dict "value" .Values.diagnosticMode.args "context" $) | nindent 12 }}
@@ -259,8 +259,8 @@ spec:
           startupProbe: {{- include "common.tplvalues.render" (dict "value" (omit .Values.replica.startupProbe "enabled") "context" $) | nindent 12 }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_liveness_local.sh {{ .Values.replica.livenessProbe.timeoutSeconds }}
           {{- end }}
           {{- if .Values.replica.customLivenessProbe }}
@@ -274,8 +274,8 @@ spec:
             failureThreshold: {{ .Values.replica.livenessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_liveness_local.sh {{ .Values.replica.livenessProbe.timeoutSeconds }}
           {{- end }}
           {{- if .Values.replica.customReadinessProbe }}
@@ -289,8 +289,8 @@ spec:
             failureThreshold: {{ .Values.replica.readinessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_readiness_local.sh {{ .Values.replica.readinessProbe.timeoutSeconds }}
           {{- end }}
           {{- end }}
@@ -347,7 +347,7 @@ spec:
               exec:
                 command:
                   - /bin/bash
-                  - -c
+                  - -ec
                   - /opt/bitnami/scripts/start-scripts/prestop-sentinel.sh
           {{- end }}
           {{- end }}
@@ -359,7 +359,7 @@ spec:
           {{- else if .Values.sentinel.command }}
           command: {{- include "common.tplvalues.render" (dict "value" .Values.sentinel.command "context" $) | nindent 12 }}
           {{- else }}
-          command: ['/bin/bash', '-c']
+          command: ['/bin/bash', '-ec']
           {{- end }}
           {{- if .Values.diagnosticMode.enabled }}
           args: {{- include "common.tplvalues.render" (dict "value" .Values.diagnosticMode.args "context" $) | nindent 12 }}
@@ -453,8 +453,8 @@ spec:
           startupProbe: {{- include "common.tplvalues.render" (dict "value" (omit .Values.sentinel.startupProbe "enabled") "context" $) | nindent 12 }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_sentinel.sh {{ .Values.sentinel.livenessProbe.timeoutSeconds }}
           {{- end }}
           {{- if .Values.sentinel.customLivenessProbe }}
@@ -468,8 +468,8 @@ spec:
             failureThreshold: {{ .Values.sentinel.livenessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_sentinel.sh {{ .Values.sentinel.livenessProbe.timeoutSeconds }}
           {{- end }}
           {{- end }}
@@ -485,8 +485,8 @@ spec:
             failureThreshold: {{ .Values.sentinel.readinessProbe.failureThreshold }}
             exec:
               command:
-                - sh
-                - -c
+                - /bin/bash
+                - -ec
                 - /health/ping_sentinel.sh {{ .Values.sentinel.readinessProbe.timeoutSeconds }}
           {{- end }}
           {{- end }}
@@ -544,7 +544,7 @@ spec:
           {{- else }}
           command:
             - /bin/bash
-            - -c
+            - -ec
             - |
               {{- if and .Values.auth.enabled .Values.auth.usePasswordFiles }}
               export REDIS_PASSWORD="$(< $REDIS_PASSWORD_FILE)"
diff --git a/bitnami/redis/values.yaml b/bitnami/redis/values.yaml
index 3542ec7cff6785..ef5e11a8f53d6c 100644
--- a/bitnami/redis/values.yaml
+++ b/bitnami/redis/values.yaml
@@ -496,7 +496,7 @@ master:
   ##  - name: your-image-name
   ##    image: your-image
   ##    imagePullPolicy: Always
-  ##    command: ['sh', '-c', 'echo "hello world"']
+  ##    command: ['/bin/bash', '-ec', 'echo "hello world"']
   ##
   initContainers: []
   ## Persistence parameters
@@ -981,7 +981,7 @@ replica:
   ##  - name: your-image-name
   ##    image: your-image
   ##    imagePullPolicy: Always
-  ##    command: ['sh', '-c', 'echo "hello world"']
+  ##    command: ['/bin/bash', '-c', 'echo "hello world"']
   ##
   initContainers: []
   ## Persistence Parameters