diff --git a/testing/firefox/checksums b/testing/firefox/checksums
index fc8230e9..6c44d924 100644
--- a/testing/firefox/checksums
+++ b/testing/firefox/checksums
@@ -1,4 +1,4 @@
-1ec1da97356352421e6bd5a0553e26945f24f30b09d2fc32e5fe8c069584d76b  firefox-73.0b1.source.tar.xz
+21bc680fcb48d80a37532a26ccaa11e8ae4198b94bd4a485e4d471fc8d6a346d  firefox-73.0b2.source.tar.xz
 f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e  autoconf-2.13.tar.gz
 b5e70b12cc9dd18fffd7924a7d3a2e11574136fe0764359d08eba0755f1c5d4c  mozconfig
 960d82bbfdc88c95f5cb4f2e1c1bf23dae7519b3b7203914d7b3ddbff1ba4c28  stab.h
diff --git a/testing/firefox/sources b/testing/firefox/sources
index 62fdc12e..e77c9a54 100644
--- a/testing/firefox/sources
+++ b/testing/firefox/sources
@@ -1,4 +1,4 @@
-https://archive.mozilla.org/pub/firefox/releases/73.0b1/source/firefox-73.0b1.source.tar.xz
+https://archive.mozilla.org/pub/firefox/releases/73.0b2/source/firefox-73.0b2.source.tar.xz
 https://ftp.gnu.org/gnu/autoconf/autoconf-2.13.tar.gz autoconf2.13/
 files/mozconfig
 files/stab.h toolkit/crashreporter/google-breakpad/src/
diff --git a/testing/firefox/version b/testing/firefox/version
index 5c2fa857..ba992513 100644
--- a/testing/firefox/version
+++ b/testing/firefox/version
@@ -1 +1 @@
-73.0b1 1
+73.0b2 1