diff --git a/tools/chocolateyInstall.ps1 b/tools/chocolateyInstall.ps1
index ee6e9ff..8dc5032 100644
--- a/tools/chocolateyInstall.ps1
+++ b/tools/chocolateyInstall.ps1
@@ -1,11 +1,11 @@
 $packageName = 'zstandard'
-$packageVersion = '1.5.0'
-$urlArray = @('https://github.com/facebook/zstd/releases/download/v1.5.0/zstd-v1.5.0-win32.zip', 'https://github.com/facebook/zstd/releases/download/v1.5.0/zstd-v1.5.0-win64.zip')
+$packageVersion = '1.5.6'
+$urlArray = @('https://github.com/facebook/zstd/releases/download/v1.5.6/zstd-v1.5.6-win32.zip', 'https://github.com/facebook/zstd/releases/download/v1.5.6/zstd-v1.5.6-win64.zip')
 $url = $urlArray[0]
-$checksum = 'd406d1e404a4c09d16df234953eaa706928946dd160eead7cdf5cbe75b3f72344635c7ca71ff23a10a5375b2d2805d4967f71747b8f07b1347a9fa09298646a0'
+$checksum = '4a088296edf5e9a74ad9dd80e463cb7d37eaf4f62012a62804f768333e6c42160c6c6b41624b3d219936cdf3e73fd8a544334858efdba8804fd567ab0d95caab'
 $checksumType = 'sha512'
 $url64 = $urlArray[1]
-$checksum64 = 'fcd4e974a6701a395b6c8bb7f0625253047b18d88f22fbb1fe97128dfc3f327850bc56f12560bea591efeca904b54a1dc536a8e9a7b76d8b45795d3a191454b6'
+$checksum64 = '5e3e4893607c7fc5e18f8fe5e6dd392d574d7449ba6ce878bf5547663258e3db3fa20834ac2ac48811ae772b047bb936f7e0f7b71cbd088f54df5bd5f0ee56c9'
 $checksumType64 = 'sha512'
 $toolsDir = "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"
  
diff --git a/zstandard.nuspec b/zstandard.nuspec
index 37400cf..26e7d54 100644
--- a/zstandard.nuspec
+++ b/zstandard.nuspec
@@ -4,7 +4,7 @@
   <metadata>
     <!-- == PACKAGE SPECIFIC SECTION == -->
     <id>zstandard</id>
-    <version>1.5.0</version>
+    <version>1.5.6</version>
     <packageSourceUrl>https://github.com/maki-chan/choco.zstandard</packageSourceUrl>
     <owners>Michael Armbruster</owners>
 
@@ -12,7 +12,7 @@
     <title>Zstandard</title>
     <authors>Facebook</authors>
     <projectUrl>https://facebook.github.io/zstd/</projectUrl>
-    <iconUrl>https://cdn.jsdelivr.net/gh/facebook/zstd@v1.5.0/doc/images/zstd_logo86.png</iconUrl>
+    <iconUrl>https://cdn.jsdelivr.net/gh/facebook/zstd@v1.5.6/doc/images/zstd_logo86.png</iconUrl>
     <copyright>Copyright © 2016-present, Facebook, Inc. All rights reserved.</copyright>
     <licenseUrl>https://raw.githubusercontent.com/facebook/zstd/dev/LICENSE</licenseUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
@@ -23,7 +23,7 @@
     <description>Zstandard, or zstd as short version, is a fast lossless compression algorithm, targeting real-time compression scenarios at zlib-level and better compression ratios. It's backed by a very fast entropy stage, provided by Huff0 and FSE library.
 
 The project is provided as an open-source dual BSD and GPLv2 licensed C library, and a command line utility producing and decoding .zst, .gz, .xz and .lz4 files. Should your project require another programming language, a list of known ports and bindings is provided on Zstandard homepage.</description>
-    <releaseNotes>https://github.com/facebook/zstd/blob/v1.5.0/CHANGELOG</releaseNotes>
+    <releaseNotes>https://github.com/facebook/zstd/blob/v1.5.6/CHANGELOG</releaseNotes>
   </metadata>
   <files>
     <file src="tools\**" target="tools" />