diff --git a/appveyor.yml b/appveyor.yml
index a14ba9f..2f97a67 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -21,7 +21,7 @@ init:
 
 # Install Pester
 install:
-    - cinst -y pester
+    - choco install pester --version=4.10.1 -y
 
 # to run your custom scripts instead of automatic MSBuild
 build_script:
diff --git a/tools/setup.psm1 b/tools/setup.psm1
index 702d02e..354b179 100644
--- a/tools/setup.psm1
+++ b/tools/setup.psm1
@@ -178,7 +178,7 @@ function Invoke-SHiPSTest {
         $TestResultsFile = Microsoft.PowerShell.Management\Join-Path -Path $script:TestHome -ChildPath "TestResults.xml"
         if($script:PowerShellEdition -eq 'Core')
         {
-            & $PowerShellExePath -Command "`$env:PSModulePath ; `$PSVersionTable; `$ProgressPreference = 'SilentlyContinue';Install-Module Pester -force; Import-Module Pester; Invoke-Pester -Script $script:TestHome -OutputFormat NUnitXml -OutputFile $TestResultsFile"
+            & $PowerShellExePath -Command "`$env:PSModulePath ; `$PSVersionTable; `$ProgressPreference = 'SilentlyContinue';Install-Module Pester -MaximumVersion 4.10.1 -Force; Import-Module Pester -MaximumVersion 4.10.1 -Force; Invoke-Pester -Script $script:TestHome -OutputFormat NUnitXml -OutputFile $TestResultsFile"
         }
         else {
             & $PowerShellExePath -Command "`$env:PSModulePath ; `$PSVersionTable; `$ProgressPreference = 'SilentlyContinue'; Invoke-Pester -Script $script:TestHome -OutputFormat NUnitXml -OutputFile $TestResultsFile"