diff --git a/.github/workflows/automatic-update.yml b/.github/workflows/automatic-update.yml
index 9036e48..71038d3 100644
--- a/.github/workflows/automatic-update.yml
+++ b/.github/workflows/automatic-update.yml
@@ -33,7 +33,7 @@ jobs:
           cd DivineMC
           echo "Before sed:"
           cat gradle.properties
-          sed -i "s/\purpurRef=.*/purpurRef=$PAPER_REF/" gradle.properties
+          sed -i "s/\(purpurRef\s*=\s*\).*/\1$PAPER_REF/" gradle.properties
           echo "After sed:"
           cat gradle.properties
         env: