diff --git a/styles/ICLC-10.csl b/styles/ICLC-10.csl
index 8a3889c..8d72c62 100644
--- a/styles/ICLC-10.csl
+++ b/styles/ICLC-10.csl
@@ -98,7 +98,7 @@
   <macro name="access">
     <choose>
       <if variable="DOI">
-        <text variable="DOI" prefix="http://doi.org/"/>
+        <text variable="DOI" prefix="https://doi.org/"/>
       </if>
       <else-if variable="URL">
         <text variable="URL"/>