diff --git a/Scripts/RenderingSession.ps1 b/Scripts/RenderingSession.ps1
index 63bbc359..125fd999 100644
--- a/Scripts/RenderingSession.ps1
+++ b/Scripts/RenderingSession.ps1
@@ -74,7 +74,7 @@ if (-Not $LoggedIn) {
 # returns a session ID which can be used to retrieve session status
 function CreateRenderingSession($authenticationEndpoint, $serviceEndpoint, $accountId, $accountKey, $vmSize = "standard", $maxLeaseTime = "4:0:0", $additionalParameters, $sessionId) {
     try {
-        $maxLeaseTimeInMinutes = ([timespan]$config.renderingSessionSettings.maxLeaseTime).TotalMinutes
+        $maxLeaseTimeInMinutes = ([timespan]$config.renderingSessionSettings.maxLeaseTime).TotalMinutes -as [int]
 
         $body =
         @{
@@ -196,7 +196,7 @@ function UpdateSession($authenticationEndpoint, $serviceEndpoint, $accountId, $a
     try {
         $body =
         @{
-            maxLeaseTimeMinutes = $maxLeaseTime.TotalMinutes;
+            maxLeaseTimeMinutes = $maxLeaseTime.TotalMinutes -as [int];
         } | ConvertTo-Json
         $url = "$serviceEndpoint/accounts/$accountId/sessions/${sessionId}?api-version=2021-01-01-preview"
 
@@ -390,8 +390,8 @@ PollSessionStatus -authenticationEndpoint $config.accountSettings.authentication
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@@ -488,50 +488,50 @@ PollSessionStatus -authenticationEndpoint $config.accountSettings.authentication
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@@ -569,32 +569,32 @@ PollSessionStatus -authenticationEndpoint $config.accountSettings.authentication
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 # SIG # End signature block