diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1f9473d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.md
+*.json
+papers
diff --git a/go.mod b/go.mod
index 38be507..dd957f2 100644
--- a/go.mod
+++ b/go.mod
@@ -7,5 +7,5 @@ toolchain go1.23.5
 require (
 	gitea.r8z.us/stwhite/arxiva v0.1.0
 	gitea.r8z.us/stwhite/paperformatter v0.1.3
-	gitea.r8z.us/stwhite/paperprocessor v0.1.5
+	gitea.r8z.us/stwhite/paperprocessor v0.1.8
 )
diff --git a/go.sum b/go.sum
index 021fbe3..b882b57 100644
--- a/go.sum
+++ b/go.sum
@@ -2,5 +2,5 @@ gitea.r8z.us/stwhite/arxiva v0.1.0 h1:v4rRQazWDQN6A4jqUjvJoTuGVlxHH9ee1SU/vculBN
 gitea.r8z.us/stwhite/arxiva v0.1.0/go.mod h1:V+xRJF205br/E1NM15S0htyfPnG8FERaluMTs97DcGM=
 gitea.r8z.us/stwhite/paperformatter v0.1.3 h1:Z8yIdfCmQ+c5A5To+Y3XPHNOdK5B/q5VqBPZkmYqKPc=
 gitea.r8z.us/stwhite/paperformatter v0.1.3/go.mod h1:As2zIT0NSsMirYqdvIfIXXxIHOcdsHANhnh0VNcAluQ=
-gitea.r8z.us/stwhite/paperprocessor v0.1.5 h1:c9HYWblP0D7mz0/mfcg4j98j1cisrcUPuQFSWuGpsIQ=
-gitea.r8z.us/stwhite/paperprocessor v0.1.5/go.mod h1:0wHe7XjtQICFrPKbO53SVrUiVw9yi8GOGo9J7znpo+E=
+gitea.r8z.us/stwhite/paperprocessor v0.1.8 h1:pV810JZQFhuKcle4ix7stUz12LZNIgFCVWxSC/RYWpE=
+gitea.r8z.us/stwhite/paperprocessor v0.1.8/go.mod h1:0wHe7XjtQICFrPKbO53SVrUiVw9yi8GOGo9J7znpo+E=
diff --git a/papers.go b/papers.go
index 2589392..ca4cf7a 100644
--- a/papers.go
+++ b/papers.go
@@ -14,9 +14,11 @@ import (
 	"gitea.r8z.us/stwhite/paperprocessor"
 )
 
-// sanitizeFilename replaces invalid filename characters
+// sanitizeFilename replaces invalid filename characters to match arxiva's sanitization
 func sanitizeFilename(s string) string {
-	return strings.ReplaceAll(s, ":", "_")
+	s = strings.ReplaceAll(s, ":", "_")
+	s = strings.ReplaceAll(s, " ", "_")
+	return s
 }
 
 // isValidDate checks if the date string is in YYYYMMDD format