ship PopplerCache.h
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 194d46b..2851b85 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -308,6 +308,7 @@
     poppler/Parser.h
     poppler/PDFDoc.h
     poppler/PDFDocEncoding.h
+    poppler/PopplerCache.h
     poppler/ProfileData.h
     poppler/PreScanOutputDev.h
     poppler/PSTokenizer.h