diff --git a/config.sh b/config.sh
index f6143cfef..af10cf23a 100644
--- a/config.sh
+++ b/config.sh
@@ -5,7 +5,7 @@ ARCHIVE_SDIR=pillow-depends-master
 
 # Package versions for fresh source builds
 FREETYPE_VERSION=2.10.0
-LIBPNG_VERSION=1.6.36
+LIBPNG_VERSION=1.6.37
 ZLIB_VERSION=1.2.11
 JPEG_VERSION=9c
 OPENJPEG_VERSION=2.3.1