diff --git a/.github/actions/test-network-setup/action.yaml b/.github/actions/test-network-setup/action.yaml
index a5ce6fccb5..f0f17e2323 100644
--- a/.github/actions/test-network-setup/action.yaml
+++ b/.github/actions/test-network-setup/action.yaml
@@ -12,10 +12,10 @@ inputs:
     default: 11.x
   fabric-version:
     description: Version of Hyperledger Fabric
-    default: 2.5.8
+    default: 2.5.9
   ca-version:
     description: Version of Hyperledger Fabric CA
-    default: 1.5.11
+    default: 1.5.12
 
 runs:
   using: "composite"
diff --git a/full-stack-asset-transfer-guide/infrastructure/sample-network/network b/full-stack-asset-transfer-guide/infrastructure/sample-network/network
index 804d09b7b5..dbeeca88af 100755
--- a/full-stack-asset-transfer-guide/infrastructure/sample-network/network
+++ b/full-stack-asset-transfer-guide/infrastructure/sample-network/network
@@ -33,8 +33,8 @@ function context() {
   export ${name}="${!override_name:-${default_value}}"
 }
 
-context FABRIC_VERSION            2.5.8
-context FABRIC_CA_VERSION         1.5.11
+context FABRIC_VERSION            2.5.9
+context FABRIC_CA_VERSION         1.5.12
 
 context CLUSTER_RUNTIME           kind                  # or k3s for Rancher
 context CONTAINER_CLI             docker                # or nerdctl for containerd
diff --git a/test-network/scripts/utils.sh b/test-network/scripts/utils.sh
index 707e0c15de..6ee74891c7 100755
--- a/test-network/scripts/utils.sh
+++ b/test-network/scripts/utils.sh
@@ -17,8 +17,8 @@ function printHelp() {
     println
     println "    Flags:"
     println "    Used with \033[0;32mnetwork.sh prereq\033[0m:"
-    println "    -i     FabricVersion (default: '2.5.8')"
-    println "    -cai   Fabric CA Version (default: '1.5.11')"
+    println "    -i     FabricVersion (default: '2.5.9')"
+    println "    -cai   Fabric CA Version (default: '1.5.12')"
     println  
   elif [ "$USAGE" == "up" ]; then
     println "Usage: "
@@ -159,8 +159,8 @@ function printHelp() {
     println
     println "    Flags:"
     println "    Used with \033[0;32mnetwork.sh prereq\033[0m"
-    println "    -i     FabricVersion (default: '2.5.8')"
-    println "    -cai   Fabric CA Version (default: '1.5.11')"
+    println "    -i     FabricVersion (default: '2.5.9')"
+    println "    -cai   Fabric CA Version (default: '1.5.12')"
     println
     println "    Used with \033[0;32mnetwork.sh up\033[0m, \033[0;32mnetwork.sh createChannel\033[0m:"
     println "    -ca - Use Certificate Authorities to generate network crypto material"