diff --git a/metadata/us.spotco.fennec_dos.yml b/metadata/us.spotco.fennec_dos.yml
index 2b5c9de1b2..67dcb2d8d8 100644
--- a/metadata/us.spotco.fennec_dos.yml
+++ b/metadata/us.spotco.fennec_dos.yml
@@ -1132,15 +1132,14 @@ Builds:
     timeout: 18000
     sudo:
       - apt-get update
-      - apt-get install -y openjdk-11-jdk-headless g++ python-setuptools tcl gyp ninja-build
-        libffi-dev libsqlite3-dev
-      - update-alternatives --auto java
+      - apt-get install -y cmake make m4 g++ pkg-config libssl-dev python-is-python3
+        python3-distutils tcl gyp ninja-build bzip2 libz-dev libffi-dev libsqlite3-dev
     output: app/build/outputs/apk/release/app-*-release-unsigned.apk
     srclibs:
       - MozAndroidComponents@v105.0.8
       - MozAndroidComponentsAS@v104.0.2
       - MozAppServices@v94.1.0
-      - MullBuild@v105.2.0
+      - MullBuild@v105.2.0-bullseye
       - MozFennec@FIREFOX_105_0_2_RELEASE
       - MozGlean@v51.1.0
       - MozGleanAS@v50.1.3
@@ -1157,15 +1156,14 @@ Builds:
     timeout: 18000
     sudo:
       - apt-get update
-      - apt-get install -y openjdk-11-jdk-headless g++ python-setuptools tcl gyp ninja-build
-        libffi-dev libsqlite3-dev
-      - update-alternatives --auto java
+      - apt-get install -y cmake make m4 g++ pkg-config libssl-dev python-is-python3
+        python3-distutils tcl gyp ninja-build bzip2 libz-dev libffi-dev libsqlite3-dev
     output: app/build/outputs/apk/release/app-*-release-unsigned.apk
     srclibs:
       - MozAndroidComponents@v105.0.8
       - MozAndroidComponentsAS@v104.0.2
       - MozAppServices@v94.1.0
-      - MullBuild@v105.2.0
+      - MullBuild@v105.2.0-bullseye
       - MozFennec@FIREFOX_105_0_2_RELEASE
       - MozGlean@v51.1.0
       - MozGleanAS@v50.1.3