diff --git a/metadata/de.akaflieg_freiburg.enroute.yml b/metadata/de.akaflieg_freiburg.enroute.yml
index bffa0a3f90..b6c81bddd2 100644
--- a/metadata/de.akaflieg_freiburg.enroute.yml
+++ b/metadata/de.akaflieg_freiburg.enroute.yml
@@ -47,7 +47,7 @@ Builds:
     submodules: true
     sudo:
       - apt-get update || apt-get update
-      - apt-get install --yes librsvg2-bin
+      - apt-get install --yes librsvg2-bin p7zip
       - apt-get -t stretch-backports-sloppy install libarchive13
       - apt-get -t stretch-backports install cmake
     patch:
diff --git a/metadata/net.gcompris.full.yml b/metadata/net.gcompris.full.yml
index 5cd61abc07..74d6e5804e 100644
--- a/metadata/net.gcompris.full.yml
+++ b/metadata/net.gcompris.full.yml
@@ -23,7 +23,7 @@ Builds:
     submodules: true
     sudo:
       - apt-get update || apt-get update
-      - apt-get install --yes extra-cmake-modules libncurses5
+      - apt-get install --yes extra-cmake-modules libncurses5 p7zip
     output: android-build/android/bin/GCompris-Android-release-armeabi-v7a-dl-$$VERSION$$.apk
     prebuild: mkdir qt/ android-build/
     scandelete:
@@ -77,7 +77,7 @@ Builds:
     submodules: true
     sudo:
       - apt-get update || apt-get update
-      - apt-get install --yes libncurses5 -t stretch-backports cmake
+      - apt-get install --yes libncurses5 -t stretch-backports cmake p7zip
     output: android-build/android/GCompris-Android-release-armeabi-v7a-dl-$$VERSION$$.apk
     srclibs:
       - extra-cmake-modules@v5.63.0
diff --git a/metadata/net.sourceforge.kid3.yml b/metadata/net.sourceforge.kid3.yml
index a70e960468..89810dbac9 100644
--- a/metadata/net.sourceforge.kid3.yml
+++ b/metadata/net.sourceforge.kid3.yml
@@ -33,7 +33,7 @@ Builds:
     commit: v3.7.1
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/bin/QtApp-release-unsigned.apk
     target: android-19
     build:
@@ -59,7 +59,7 @@ Builds:
     commit: v3.8.0
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/build/outputs/apk/release/android-release-unsigned.apk
     target: android-22
     build:
@@ -85,7 +85,7 @@ Builds:
     commit: v3.8.1
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/build/outputs/apk/release/android-release-unsigned.apk
     target: android-22
     build:
@@ -111,7 +111,7 @@ Builds:
     commit: v3.8.2
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/build/outputs/apk/release/android-release-unsigned.apk
     target: android-22
     build:
@@ -137,7 +137,7 @@ Builds:
     commit: v3.8.3
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/build/outputs/apk/release/android-release-unsigned.apk
     target: android-22
     build:
@@ -163,7 +163,7 @@ Builds:
     commit: v3.8.4
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/build/outputs/apk/release/android-release-unsigned.apk
     target: android-22
     build:
@@ -189,7 +189,7 @@ Builds:
     commit: v3.8.5
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/build/outputs/apk/release/android-release-unsigned.apk
     target: android-22
     build:
@@ -215,7 +215,7 @@ Builds:
     commit: v3.8.6
     sudo:
       - apt-get update || apt-get update
-      - apt-get install -y docbook-xsl
+      - apt-get install -y docbook-xsl p7zip
     output: android-build/kid3/android/build/outputs/apk/release/android-release-unsigned.apk
     target: android-22
     build: