diff --git a/automatic/firefox-nightly/firefox-nightly.json b/automatic/firefox-nightly/firefox-nightly.json
index c3e4c8695..e3fc8642b 100644
--- a/automatic/firefox-nightly/firefox-nightly.json
+++ b/automatic/firefox-nightly/firefox-nightly.json
@@ -1,3 +1,3 @@
 {
-    "nightly":  "71.0.1.2019092809-alpha"
+    "nightly":  "71.0.1.2019092821-alpha"
 }
diff --git a/automatic/firefox-nightly/firefox-nightly.nuspec b/automatic/firefox-nightly/firefox-nightly.nuspec
index d4cc78162..a19556dd4 100644
--- a/automatic/firefox-nightly/firefox-nightly.nuspec
+++ b/automatic/firefox-nightly/firefox-nightly.nuspec
@@ -26,7 +26,7 @@ This is a nuspec. It mostly adheres to https://docs.nuget.org/create/Nuspec-Refe
     <!-- version should MATCH as closely as possible with the underlying software -->
     <!-- Is the version a prerelease of a version? https://docs.nuget.org/create/versioning#creating-prerelease-packages -->
     <!-- Note that unstable versions like 0.0.1 can be considered a released version, but it's possible that one can release a 0.0.1-beta before you release a 0.0.1 version. If the version number is final, that is considered a released version and not a prerelease. -->
-    <version>71.0.1.2019092809-alpha</version>
+    <version>71.0.1.2019092821-alpha</version>
     <!-- owners is a poor name for maintainers of the package. It sticks around by this name for compatibility reasons. It basically means you. -->
     <owners>Maurice Kevenaar</owners>
     <!-- ============================== -->
diff --git a/automatic/firefox-nightly/tools/LanguageChecksums.csv b/automatic/firefox-nightly/tools/LanguageChecksums.csv
index 2b1cc338e..2f214cc21 100644
--- a/automatic/firefox-nightly/tools/LanguageChecksums.csv
+++ b/automatic/firefox-nightly/tools/LanguageChecksums.csv
@@ -42,8 +42,8 @@ en-CA|32|05b3dac321ab80005ec65a685e6982664a265f236c9d384f2e95c2f111006fdd7f64a08
 en-CA|64|c4ca02d449ab18f0c881e6a34827bba86b430d0776af0538e3f7f476694a00807ecdd2209619306a04ff5b39d9778bea368a3c8ddf20754fe269f1fe5398ca17
 en-GB|32|e3e952aacffcc60b40256dc30ce7a029ceb76f14cea367a86075f16c5a98a1d3181cbeb9441ba422b2a997e86167276cb9b1acf50d1bfbdcb452f53cf08646ee
 en-GB|64|1ac61b479125f464fa64faf34351ebd80ad59ca54949ab7cb1dba78d02371f2065d8b822167f69dab56025618d98a8b30a9c66c29d52218ef828889c578b43b1
-en-US|32|a23fc26461729526ad9b97886b09925d6795e1c0efda940eef34b04450db286a010bb883a55368aaae994b196d0d877c5efd49b99a5c1e1eaca478f9deb40107
-en-US|64|5ec2db4522c34dd7583406b5183c74f6ddc2668a02a09801111a8a032c4b62c939b06581da25e65d07fbb8511ea74e1ff61005b564947838959138f8eee538f9
+en-US|32|cc25b73f09c11ff5a90dc4c0b206e09874d51fa92ceacff51cfebef7dfcf5f951552772798d84780e3cf112f3b46ff5159e36ea5e8b8f21b5ece3d7d8dd8cdc4
+en-US|64|568313b6ba7018ef2642882f883752b29e8284fd4bb729c69c2eed4ffdf63ec7bb9c5f47371c56803beb7753337d540e05151ca9c281b62b835fd1a774bd0198
 eo|32|4bb96553b7220e42d84d197bf2e8ffe23e258db154357b7b7563cf3a6b968c1daa03c4e80e37c1ef37da521744d5d12baab7036cfa2565eb32f6ae0bce647273
 eo|64|3765a15ac6eb5289162d42ef66e88f62dcaf4d7723ebde38add95aad862fd8c6ddb044ad413c03c8bfaa67bc265bc3d8b4d99b0c37b573a11866d96c85db3742
 es-AR|32|45129c30544cf25f7104e0aaf43f8eacaae4d9ae6ed721d2ce26899c13932db85a6bf739cd415f9279a88ce6917f052602aef17fe948e3bb71c2b3c85f5f139c
diff --git a/automatic/firefox-nightly/tools/chocolateyInstall.ps1 b/automatic/firefox-nightly/tools/chocolateyInstall.ps1
index 7a25d97a9..a26805b6b 100644
--- a/automatic/firefox-nightly/tools/chocolateyInstall.ps1
+++ b/automatic/firefox-nightly/tools/chocolateyInstall.ps1
@@ -34,7 +34,7 @@ if (Get-32bitOnlyInstalled -product $softwareName) {
 
     Checksum = $checksums.Win32
     ChecksumType = 'sha512'
-    Url = "https://archive.mozilla.org/pub/firefox/nightly/2019/09/2019-09-28-09-46-05-mozilla-central/firefox-71.0a1.${locale}.win32.installer.exe"
+    Url = "https://archive.mozilla.org/pub/firefox/nightly/2019/09/2019-09-28-21-17-35-mozilla-central/firefox-71.0a1.${locale}.win32.installer.exe"
 
     silentArgs = '-ms'
     validExitCodes = @(0)
@@ -43,7 +43,7 @@ if (Get-32bitOnlyInstalled -product $softwareName) {
   if (!(Get-32bitOnlyInstalled($softwareName)) -and (Get-OSArchitectureWidth 64)) {
     $packageArgs.Checksum64 = $checksums.Win64
     $packageArgs.ChecksumType64 = 'sha512'
-    $packageArgs.Url64 = "https://archive.mozilla.org/pub/firefox/nightly/2019/09/2019-09-28-09-46-05-mozilla-central/firefox-71.0a1.${locale}.win64.installer.exe"
+    $packageArgs.Url64 = "https://archive.mozilla.org/pub/firefox/nightly/2019/09/2019-09-28-21-17-35-mozilla-central/firefox-71.0a1.${locale}.win64.installer.exe"
   }
 
   Install-ChocolateyPackage @packageArgs