diff --git a/metadata/org.gnu.icecat.txt b/metadata/org.gnu.icecat.txt
index 6f8c1b71e1..aa60fd8fe7 100644
--- a/metadata/org.gnu.icecat.txt
+++ b/metadata/org.gnu.icecat.txt
@@ -240,6 +240,8 @@ Build:45.7.0,450710
 
 Build:52.3.0,520300
     commit=FIREFOX_52_3_0esr_RELEASE
+    sudo=apt-get update -y && \
+        apt-get install -y g++
     output=fdroid/icecat-unsigned.apk
     srclibs=MozLocales@51f4f0fb,IceCat@97a01a1c
     prebuild=bash $$IceCat$$/makeicecat -- --no-tarball --skip-l10n --no-debian --with-sourcedir=$PWD && \
@@ -261,6 +263,8 @@ Build:52.3.0,520300
 
 Build:52.3.0,520310
     commit=FIREFOX_52_3_0esr_RELEASE
+    sudo=apt-get update -y && \
+        apt-get install -y g++
     output=fdroid/icecat-unsigned.apk
     srclibs=MozLocales@51f4f0fb,IceCat@97a01a1c
     prebuild=bash $$IceCat$$/makeicecat -- --no-tarball --skip-l10n --no-debian --with-sourcedir=$PWD && \
@@ -282,6 +286,7 @@ Build:52.3.0,520310
 
 Maintainer Notes:
 Needs Mercurial (a.k.a. hg) >= 3.5 to clone from Mozilla server.
+Needs host g++ since at least version 52.3
 .
 
 Archive Policy:4 versions