diff --git a/CHANGELOG.md b/CHANGELOG.md
index ff55f40..b87d92d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ BREAKING CHANGES:
 FEATURES:
 
  * Enhancement - Add switch to force x86 when packages have both versions - [#365](https://github.com/chocolatey/chocolatey/issues/365)
+ * Enhancement - Allow passing parameters to packages - [#159](https://github.com/chocolatey/chocolatey/issues/159)
 
 IMPROVEMENTS:
 
diff --git a/nuget/chocolatey.nuspec b/nuget/chocolatey.nuspec
index f7c9e19..c34ad8d 100644
--- a/nuget/chocolatey.nuspec
+++ b/nuget/chocolatey.nuspec
@@ -32,6 +32,7 @@ BREAKING CHANGES:
 FEATURES:
 
  * Enhancement - Add switch to force x86 when packages have both versions - [#365](https://github.com/chocolatey/chocolatey/issues/365)
+ * Enhancement - Allow passing parameters to packages - [#159](https://github.com/chocolatey/chocolatey/issues/159)
 
 IMPROVEMENTS:
 
diff --git a/src/chocolatey.ps1 b/src/chocolatey.ps1
index ad5285d..168671e 100644
--- a/src/chocolatey.ps1
+++ b/src/chocolatey.ps1
@@ -15,6 +15,7 @@
   [string] $name,
   [switch] $ignoreDependencies = $false,
   [alias("x86")][switch] $forceX86 = $false,
+  [alias("params")][alias("parameters")][alias("pkgParams")][hashtable]$packageParameters = @{},
   [parameter(Position=1, ValueFromRemainingArguments=$true)]
   [string[]]$packageNames=@('')
 )
@@ -114,7 +115,7 @@ if ([Environment]::OSVersion.Version -lt (new-object 'Version' 6,0)){
 #main entry point
 Append-Log
 
-Write-Debug "Arguments: `$command = '$command'|`$packageNames='$packageNames'|`$source='$source'|`$version='$version'|`$allVersions=$allVersions|`$InstallArguments='$installArguments'|`$overrideArguments=$overrideArgs|`$force=$force|`$prerelease=$prerelease|`$localonly=$localonly|`$verbosity=$verbosity|`$debug=$debug|`$name='$name'|`$ignoreDependencies=$ignoreDependencies|`$forceX86=$forceX86"
+Write-Debug "Arguments: `$command = '$command'|`$packageNames='$packageNames'|`$source='$source'|`$version='$version'|`$allVersions=$allVersions|`$InstallArguments='$installArguments'|`$overrideArguments=$overrideArgs|`$force=$force|`$prerelease=$prerelease|`$localonly=$localonly|`$verbosity=$verbosity|`$debug=$debug|`$name='$name'|`$ignoreDependencies=$ignoreDependencies|`$forceX86=$forceX86|`$packageParameters='$($packageParameters.GetEnumerator() | % {"$($_.Name)=$($_.Value)"})'"
 
 # run level environment variables

 $env:chocolateyForceX86 = $null
@@ -122,6 +123,7 @@ if ($forceX86) {
   $env:chocolateyForceX86 = $true
 }
 
+$env:chocolateyPackageParameters = $packageParameters
 
 $chocolateyErrored = $false
 $badPackages = ''