diff --git a/README.md b/README.md
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@@ -1506,9 +1506,9 @@ CloudFormation
 -	CloudFormation offers a visual [template designer](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/working-with-templates-cfn-designer-walkthrough-createbasicwebserver.html) that can be useful when getting up to speed with the template syntax.
 -	By using [StackSets](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/stacksets-concepts.html), users can define and deploy an entire production application consisting of multiple stacks (one service per stack) in a single CloudFormation template.
 -	If you're developing a serverless application (i.e., using Lambda, API Gateway) CloudFormation offers a simplified template format called [SAM](https://github.com/awslabs/serverless-application-model).
--	❗Use a restrictive [stack policy](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/protect-stack-resources.html)! Without one, you can inadvertantly delete live production resources, probably causing a severe outage.
+-	❗Use a restrictive [stack policy](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/protect-stack-resources.html)! Without one, you can inadvertently delete live production resources, probably causing a severe outage.
 -	❗Turn on [termination protection](https://aws.amazon.com/about-aws/whats-new/2017/09/aws-cloudformation-provides-stack-termination-protection/) on all of your stacks to avoid costly accidents!
--	The CloudFormation [template reference](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-reference.html) is indispensible when discovering what is and isn't possible in a CloudFormation template.
+-	The CloudFormation [template reference](http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-reference.html) is indispensable when discovering what is and isn't possible in a CloudFormation template.
 -	[Troposphere](https://github.com/cloudtools/troposphere) is a Python library that makes it much easier to create CloudFormation templates.
 	- Currently supports [AWS](https://github.com/cloudtools/troposphere#currently-supported-aws-resource-types) and [OpenStack](https://github.com/cloudtools/troposphere#currently-supported-openstack-resource-types) resource types.
 	- Troposphere attempts to support all resources types that can be described in CloudFormation templates.