diff --git a/as-apply-alarms/README.txt b/as-apply-alarms/README.md similarity index 100% rename from as-apply-alarms/README.txt rename to as-apply-alarms/README.md diff --git a/as-update-launch-config/README.txt b/as-update-launch-config/README.md similarity index 100% rename from as-update-launch-config/README.txt rename to as-update-launch-config/README.md diff --git a/aws-ha-release/README.txt b/aws-ha-release/README.md similarity index 100% rename from aws-ha-release/README.txt rename to aws-ha-release/README.md diff --git a/ec2-automate-backup/README.txt b/ec2-automate-backup/README.md similarity index 100% rename from ec2-automate-backup/README.txt rename to ec2-automate-backup/README.md diff --git a/ec2-cost-calculate-ruby/README.txt b/ec2-cost-calculate-ruby/README.md similarity index 100% rename from ec2-cost-calculate-ruby/README.txt rename to ec2-cost-calculate-ruby/README.md diff --git a/ec2-cost-calculate/README.txt b/ec2-cost-calculate/README.md similarity index 100% rename from ec2-cost-calculate/README.txt rename to ec2-cost-calculate/README.md diff --git a/ec2-write-memory-metrics/README.txt b/ec2-write-memory-metrics/README.md similarity index 100% rename from ec2-write-memory-metrics/README.txt rename to ec2-write-memory-metrics/README.md diff --git a/ec2-write-storage-used/README.txt b/ec2-write-storage-used/README.md similarity index 100% rename from ec2-write-storage-used/README.txt rename to ec2-write-storage-used/README.md diff --git a/rds-apply-alarms/README.txt b/rds-apply-alarms/README.md similarity index 100% rename from rds-apply-alarms/README.txt rename to rds-apply-alarms/README.md diff --git a/rds-cost-calculate/README.txt b/rds-cost-calculate/README.md similarity index 100% rename from rds-cost-calculate/README.txt rename to rds-cost-calculate/README.md