diff --git a/extension/src/dependency-installer/installers/flow-cli-installer.ts b/extension/src/dependency-installer/installers/flow-cli-installer.ts
index bededc68..50b03415 100644
--- a/extension/src/dependency-installer/installers/flow-cli-installer.ts
+++ b/extension/src/dependency-installer/installers/flow-cli-installer.ts
@@ -98,10 +98,9 @@ export class InstallFlowCLI extends Installer {
     }
   }
 
-  async checkVersion (vsn: semver.SemVer): Promise<boolean> {
+  async checkVersion (version: semver.SemVer): Promise<boolean> {
     // Get user's version informaton
     this.#context.cliProvider.refresh()
-    const version = vsn
     if (version == null) return false
 
     if (!semver.satisfies(version, COMPATIBLE_FLOW_CLI_VERSIONS, {
diff --git a/extension/src/flow-cli/binary-versions-provider.ts b/extension/src/flow-cli/binary-versions-provider.ts
index fd44f0db..ac2bb01f 100644
--- a/extension/src/flow-cli/binary-versions-provider.ts
+++ b/extension/src/flow-cli/binary-versions-provider.ts
@@ -12,6 +12,8 @@ export enum KNOWN_FLOW_COMMANDS {
   CADENCE_V1 = 'flow-c1',
 }
 
+// This regex matches a string like "Version: v{SEMVER}" and extracts the version number
+// It uses the official semver regex from https://semver.org/
 const LEGACY_VERSION_REGEXP = /Version:\s*(v?(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?)(\s|$)/m
 
 export interface CliBinary {