diff --git a/var/spack/repos/builtin/packages/libpng/package.py b/var/spack/repos/builtin/packages/libpng/package.py
index d954778600..1b699fff01 100644
--- a/var/spack/repos/builtin/packages/libpng/package.py
+++ b/var/spack/repos/builtin/packages/libpng/package.py
@@ -10,25 +10,16 @@ class Libpng(AutotoolsPackage):
     """libpng is the official PNG reference library."""
 
     homepage = "http://www.libpng.org/pub/png/libpng.html"
-    url      = "http://download.sourceforge.net/libpng/libpng-1.6.34.tar.gz"
+    url      = "http://download.sourceforge.net/libpng/libpng-1.6.37.tar.gz"
     list_url = "https://sourceforge.net/projects/libpng/files/"
     list_depth = 2
 
-    version('1.6.34', sha256='574623a4901a9969080ab4a2df9437026c8a87150dfd5c235e28c94b212964a7')
-    version('1.6.29', sha256='e30bf36cd5882e017c23a5c6a79a9aa1a744dd5841bb45ff7035ec6e3b3096b8')
-    version('1.6.28', sha256='b6cec903e74e9fdd7b5bbcde0ab2415dd12f2f9e84d9e4d9ddd2ba26a41623b2')
-    version('1.6.27', sha256='c9d164ec247f426a525a7b89936694aefbc91fb7a50182b198898b8fc91174b4')
-    # From http://www.libpng.org/pub/png/libpng.html (2017-01-04)
-    #     Virtually all libpng versions through 1.6.26, 1.5.27,
-    #     1.4.19, 1.2.56, and 1.0.66, respectively, have a
-    #     null-pointer-dereference bug in png_set_text_2() when an
-    #     image-editing application adds, removes, and re-adds text
-    #     chunks to a PNG image. (This bug does not affect pure
-    #     viewers, nor are there any known editors that could trigger
-    #     it without interactive user input. It has been assigned ID
-    #     CVE-2016-10087.)  The vulnerability is fixed in versions
-    #     1.6.27, 1.5.28, 1.4.20, 1.2.57, and 1.0.67, released on 29
-    #     December 2016.
+    version('1.6.37', sha256='daeb2620d829575513e35fecc83f0d3791a620b9b93d800b763542ece9390fb4')
+    # From http://www.libpng.org/pub/png/libpng.html (2019-04-15)
+    #     libpng versions 1.6.36 and earlier have a use-after-free bug in the
+    #     simplified libpng API png_image_free(). It has been assigned ID
+    #     CVE-2019-7317. The vulnerability is fixed in version 1.6.37,
+    #     released on 15 April 2019.
 
     # Required for qt@3
     version('1.2.57', sha256='09ec37869fc5b130f5eb06ffb9bf949796e8d2d78e0788f78ab1c78624c6e9da')