diff --git a/ocrmypdf/main.py b/ocrmypdf/main.py
index 50c2a0fb..02f8acee 100755
--- a/ocrmypdf/main.py
+++ b/ocrmypdf/main.py
@@ -591,9 +591,8 @@ def select_image_layer(
     else:
         pageinfo = get_pageinfo(image, pdfinfo, pdfinfo_lock)
         dpi = round(max(pageinfo['xres'], pageinfo['yres'], options.oversample))
-        pdf_bytes = img2pdf.convert([image], dpi=dpi)
         with open(output_file, 'wb') as pdf:
-            pdf.write(pdf_bytes)
+            img2pdf.convert([image], dpi=dpi, outputstream=pdf)
 
 
 @active_if(options.pdf_renderer == 'hocr')
diff --git a/requirements.txt b/requirements.txt
index 5fc71a98..e152143e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,4 @@ ruffus>=2.6.3
 Pillow>=2.4.0
 reportlab>=3.1.44
 PyPDF2>=1.25.1
-img2pdf>=0.1.5
\ No newline at end of file
+git+https://github.com/jbarlow83/img2pdf.git@1261741136dcbfed65355ed93f4930617a55feee#egg=img2pdf