diff --git a/coin/provisioning/qtci-linux-Ubuntu-24.04-aarch64/02-apt.sh b/coin/provisioning/qtci-linux-Ubuntu-24.04-aarch64/02-apt.sh
index 8796ad26..d5964432 100644
--- a/coin/provisioning/qtci-linux-Ubuntu-24.04-aarch64/02-apt.sh
+++ b/coin/provisioning/qtci-linux-Ubuntu-24.04-aarch64/02-apt.sh
@@ -109,6 +109,8 @@ installPackages+=(libva-dev)
 # for QtMultimedia streaming tests
 installPackages+=(vlc-bin)
 installPackages+=(vlc-plugin-base)
+# for tst_qfloat16format, see also QTQAINFRA-6390
+installPackages+=(locales-all)
 
 # Support for cross-building to x86 (needed by WebEngine boot2qt builds)
 #installPackages+=(g++-multilib)
diff --git a/coin/provisioning/qtci-linux-Ubuntu-24.04-x86_64/02-apt.sh b/coin/provisioning/qtci-linux-Ubuntu-24.04-x86_64/02-apt.sh
index cf108d72..9640a917 100644
--- a/coin/provisioning/qtci-linux-Ubuntu-24.04-x86_64/02-apt.sh
+++ b/coin/provisioning/qtci-linux-Ubuntu-24.04-x86_64/02-apt.sh
@@ -106,6 +106,8 @@ installPackages+=(libva-dev)
 # for QtMultimedia streaming tests
 installPackages+=(vlc-bin)
 installPackages+=(vlc-plugin-base)
+# for tst_qfloat16format, see also QTQAINFRA-6390
+installPackages+=(locales-all)
 
 # Support for cross-building to x86 (needed by WebEngine boot2qt builds)
 installPackages+=(g++-multilib)