diff --git a/testing/firefox/build b/testing/firefox/build
index 0414e909..fb862887 100755
--- a/testing/firefox/build
+++ b/testing/firefox/build
@@ -15,6 +15,8 @@
 
 export PATH=$PWD/autoconf/bin:$PATH
 export LDFLAGS="$LDFLAGS -Wl,-rpath=/usr/lib/firefox"
+export CC=${CC:-gcc}
+export CXX=${CXX:-g++}
 
 for patch in *.patch; do
     patch -p1 < "$patch"
diff --git a/testing/firefox/checksums b/testing/firefox/checksums
index 0462ab8c..272db587 100644
--- a/testing/firefox/checksums
+++ b/testing/firefox/checksums
@@ -1,8 +1,8 @@
-dd756a5f67ecde7f1e19d2ec91ef0e6dbc434e58ba634017b8ac96c6204ee9b7  firefox-71.0b4.source.tar.xz
+16a129a629217a9f7c8d8fae8d4d9cfc75294b0e55a9e6e00a4a1f63e3c22558  firefox-71.0b8.source.tar.xz
 f0611136bee505811e9ca11ca7ac188ef5323a8e2ef19cffd3edb3cf08fd791e  autoconf-2.13.tar.gz
-499bbe040374e513f8b95ec67714d3967f7be9f9ea5500f4e084d8be54556ad6  mozconfig
+b5e70b12cc9dd18fffd7924a7d3a2e11574136fe0764359d08eba0755f1c5d4c  mozconfig
 960d82bbfdc88c95f5cb4f2e1c1bf23dae7519b3b7203914d7b3ddbff1ba4c28  stab.h
-5ade1dd02da56b23a1f705c4f81149a6ad6626d5f5c4f2544704bda5c4693567  vendor.js
+cfc7d5006a3381e1b04f642b518317e19790ee31d23757274fdfeaba65c98b0c  vendor.js
 f4ce7ee2485256b3f8c2bc467445f14b4730a7b895b17de7a21711d78bcfedea  policies.json
 315880530f09175788dfa48a1915bfa1e190bfd3e267988b9100cb93006c808c  fix-fortify-system-wrappers.patch
 418a2a9f80c41ee004cb640968617cab283b99f3d109aaf6180b0088d60c84b0  fix-sandbox-membarrier.patch
diff --git a/testing/firefox/sources b/testing/firefox/sources
index d8120c46..e3954462 100644
--- a/testing/firefox/sources
+++ b/testing/firefox/sources
@@ -1,9 +1,9 @@
-https://ftp.mozilla.org/pub/firefox/releases/71.0b4/source/firefox-71.0b4.source.tar.xz
+https://ftp.mozilla.org/pub/firefox/releases/71.0b8/source/firefox-71.0b8.source.tar.xz
 https://ftp.gnu.org/gnu/autoconf/autoconf-2.13.tar.gz autoconf2.13/
-files/mozconfig 
+files/mozconfig
 files/stab.h toolkit/crashreporter/google-breakpad/src/
-files/vendor.js 
-files/policies.json 
+files/vendor.js
+files/policies.json
 patches/fix-fortify-system-wrappers.patch
 patches/fix-sandbox-membarrier.patch
 patches/fix-seccomp-bpf.patch
diff --git a/testing/firefox/version b/testing/firefox/version
index c79b5de8..c0d37b63 100644
--- a/testing/firefox/version
+++ b/testing/firefox/version
@@ -1 +1 @@
-71.0b4 1
+71.0b8 1