diff --git a/scripts/install_services.sh b/scripts/install_services.sh
index ff73340..ac1bc91 100755
--- a/scripts/install_services.sh
+++ b/scripts/install_services.sh
@@ -442,12 +442,12 @@ EOF
 }
 
 install_sox() {
-  if which sox &> /dev/null;then
+  if which sox | grep mp3 &> /dev/null;then
     echo "Sox is installed"
   else
     echo "Installing sox"
     apt -qq update
-    apt install -y sox
+    apt install -y sox libsox-fmt-mp3
     echo "Sox installed"
   fi
 }
diff --git a/scripts/update_services.sh b/scripts/update_services.sh
index 3dcd03b..69c2de3 100755
--- a/scripts/update_services.sh
+++ b/scripts/update_services.sh
@@ -438,11 +438,11 @@ EOF
 }
 
 install_sox() {
-  if which sox &> /dev/null;then
+  if which sox | grep mp3 &> /dev/null;then
     echo "Sox is installed"
   else
     echo "Installing sox"
-    apt install -y sox
+    apt install -y sox libsox-fmt-mp3
     echo "Sox installed"
   fi
 }