diff --git a/build-python.patch b/build-python.patch
new file mode 100644
index 0000000..eae8e18
--- /dev/null
+++ b/build-python.patch
@@ -0,0 +1,12 @@
+diff -up firefox-95.0/build/mach_virtualenv_packages.txt.pytpatch firefox-95.0/build/mach_virtualenv_packages.txt
+--- firefox-95.0/build/mach_virtualenv_packages.txt.pytpatch	2021-12-06 07:52:44.829038010 +0100
++++ firefox-95.0/build/mach_virtualenv_packages.txt	2021-12-06 07:53:56.676269562 +0100
+@@ -1,7 +1,7 @@
+ packages.txt:build/common_virtualenv_packages.txt
+ # glean-sdk may not be installable if a wheel isn't available
+ # and it has to be built from source.
+-pypi-optional:glean-sdk==40.0.0:telemetry will not be collected
++pypi-optional:glean-sdk>=40.0.0,<=42.2.0:telemetry will not be collected
+ # Mach gracefully handles the case where `psutil` is unavailable.
+ # We aren't (yet) able to pin packages in automation, so we have to
+ # support down to the oldest locally-installed version (5.4.2).
diff --git a/firefox-mozconfig b/firefox-mozconfig
index 103bf15..90dfccf 100644
--- a/firefox-mozconfig
+++ b/firefox-mozconfig
@@ -16,6 +16,7 @@ ac_add_options --with-system-fdk-aac
 ac_add_options --enable-js-shell
 ac_add_options --with-unsigned-addon-scopes=app,system
 ac_add_options --without-sysroot
+ac_add_options --without-wasm-sandboxed-libraries
 
 export BUILD_OFFICIAL=1
 export MOZILLA_OFFICIAL=1
diff --git a/firefox.spec b/firefox.spec
index 865699d..18d91b1 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -126,7 +126,7 @@ ExcludeArch: aarch64
 %if %{?system_nss}
 %global nspr_version 4.26
 %global nspr_build_version %{nspr_version}
-%global nss_version 3.70
+%global nss_version 3.73
 %global nss_build_version %{nss_version}
 %endif
 
@@ -218,6 +218,7 @@ Patch54:        mozilla-1669639.patch
 Patch55:        firefox-testing.patch
 Patch57:        firefox-disable-ffvpx-with-vapi.patch
 Patch61:        firefox-glibc-dynstack.patch
+Patch62:        build-python.patch
 
 # Test patches
 # Generate without context by
@@ -460,6 +461,7 @@ This package contains results of tests executed during build.
 #%patch55 -p1 -b .testing
 %patch57 -p1 -b .ffvpx-with-vapi
 #%patch61 -p1 -b .glibc-dynstack
+%patch62 -p1 -b .build-python
 
 # Test patches
 #%patch100 -p1 -b .firefox-tests-xpcshell
@@ -482,7 +484,7 @@ This package contains results of tests executed during build.
 %patch407 -p1 -b .1667096
 %patch408 -p1 -b .1663844
 %patch415 -p1 -b .1670333
-%patch420 -p1 -b .mochitest-wayland-workaround
+#%patch420 -p1 -b .mochitest-wayland-workaround
 
 # PGO patches
 %if %{build_with_pgo}