diff --git a/pmm_qa/valkey/sentinel.conf.j2 b/pmm_qa/valkey/sentinel.conf.j2
index d8d75365..521b07d9 100644
--- a/pmm_qa/valkey/sentinel.conf.j2
+++ b/pmm_qa/valkey/sentinel.conf.j2
@@ -20,3 +20,5 @@ protected-mode no
 # Logging
 loglevel notice
 logfile ""
+
+maxmemory 1gb
diff --git a/pmm_qa/valkey/valkey-cluster.yml b/pmm_qa/valkey/valkey-cluster.yml
index 56208a0d..10cac527 100644
--- a/pmm_qa/valkey/valkey-cluster.yml
+++ b/pmm_qa/valkey/valkey-cluster.yml
@@ -75,6 +75,8 @@
           save 300 10
           save 60 10000
           loglevel notice
+          maxmemory-policy allkeys-lru
+          maxmemory 1gb
       loop: "{{ range(1, valkey_cluster_primaries + 1) | list }}"
 
     - name: Generate base configuration for each replica
@@ -95,6 +97,8 @@
           save 300 10
           save 60 10000
           loglevel notice
+          maxmemory-policy allkeys-lru
+          maxmemory 1gb
       loop: "{{ range(valkey_cluster_primaries + 1, valkey_cluster_node_count + 1) | list }}"
 
     - name: Create docker volumes for primary nodes
diff --git a/pmm_qa/valkey/valkey-primary.conf.j2 b/pmm_qa/valkey/valkey-primary.conf.j2
index d4923875..04a8f158 100644
--- a/pmm_qa/valkey/valkey-primary.conf.j2
+++ b/pmm_qa/valkey/valkey-primary.conf.j2
@@ -25,3 +25,4 @@ logfile ""
 
 # Memory management
 maxmemory-policy allkeys-lru
+maxmemory 1gb
diff --git a/pmm_qa/valkey/valkey-replica.conf.j2 b/pmm_qa/valkey/valkey-replica.conf.j2
index c1667dae..b2e255c3 100644
--- a/pmm_qa/valkey/valkey-replica.conf.j2
+++ b/pmm_qa/valkey/valkey-replica.conf.j2
@@ -26,3 +26,4 @@ logfile ""
 
 # Memory management
 maxmemory-policy allkeys-lru
+maxmemory 1gb