diff --git a/stix-fonts-fontconfig.conf b/stix-fonts-fontconfig.conf
index c2e411b..6d1c163 100644
--- a/stix-fonts-fontconfig.conf
+++ b/stix-fonts-fontconfig.conf
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0"?>
 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
 <fontconfig>
   <alias>
diff --git a/stix-fonts-integrals-fontconfig.conf b/stix-fonts-integrals-fontconfig.conf
index 9bf5b3f..5d33591 100644
--- a/stix-fonts-integrals-fontconfig.conf
+++ b/stix-fonts-integrals-fontconfig.conf
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0"?>
 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
 <fontconfig>
   <alias binding="same">
diff --git a/stix-fonts-pua-fontconfig.conf b/stix-fonts-pua-fontconfig.conf
index b6c6397..814bff9 100644
--- a/stix-fonts-pua-fontconfig.conf
+++ b/stix-fonts-pua-fontconfig.conf
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0"?>
 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
 <fontconfig>
   <alias binding="same">
diff --git a/stix-fonts-sizes-fontconfig.conf b/stix-fonts-sizes-fontconfig.conf
index beb95ee..8c5967f 100644
--- a/stix-fonts-sizes-fontconfig.conf
+++ b/stix-fonts-sizes-fontconfig.conf
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0"?>
 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
 <fontconfig>
   <alias binding="same">
diff --git a/stix-fonts-variants-fontconfig.conf b/stix-fonts-variants-fontconfig.conf
index f49fbba..5d2e0b5 100644
--- a/stix-fonts-variants-fontconfig.conf
+++ b/stix-fonts-variants-fontconfig.conf
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0"?>
 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
 <fontconfig>
   <alias binding="same">