diff --git a/tools/versioner/src/VFS.cpp b/tools/versioner/src/VFS.cpp
index cdf232f..8f9de88 100644
--- a/tools/versioner/src/VFS.cpp
+++ b/tools/versioner/src/VFS.cpp
@@ -54,7 +54,7 @@
       err(1, "failed to open header '%s'", file_path);
     }
 
-    auto buffer_opt = llvm::MemoryBuffer::getOpenFileSlice(fd, file_path, -1, 0);
+    auto buffer_opt = llvm::MemoryBuffer::getOpenFile(fd, file_path, -1, false, false);
     if (!buffer_opt) {
       errx(1, "failed to map header '%s'", file_path);
     }