diff --git a/testing/firefox/build b/testing/firefox/build
index 007cb2bc..4bbe0e7a 100755
--- a/testing/firefox/build
+++ b/testing/firefox/build
@@ -72,7 +72,6 @@ ac_add_options --disable-system-extension-dirs
 EOF
 
 ./mach build
-./mach run
 ./mach install
 
 # Remove a lot of uneeded "stuff".
diff --git a/testing/firefox/checksums b/testing/firefox/checksums
index abd1feec..fa0f83a4 100644
--- a/testing/firefox/checksums
+++ b/testing/firefox/checksums
@@ -1,4 +1,4 @@
-da87285148246a91d9b9852c09e7b6f30bc6c70a103591cb00ec3ff90224192c0a
+4500411f18a242972799a6fffe28ccb9fbeb83f3c0b3920ad5f797c08cbf39348d
 be44c4a1e76704bd9e0fa713f00b88e9897150eda359c3bf58c30461d9cf56e3c8
 5d713d4f8ca3538cd931d4189789748aba354ed289de6f98ab89729405f99343db
 ee279241e461011e2265086328d9d0a913ab938bb81aa97fa22b8b9b7edf5e33bc
diff --git a/testing/firefox/version b/testing/firefox/version
index 998f2c40..bed3ee2c 100644
--- a/testing/firefox/version
+++ b/testing/firefox/version
@@ -1 +1 @@
-109.0b3 1
+109.0b5 1