diff --git a/bucket/optipng.json b/bucket/optipng.json
index 4e99e7053c..fd0fce9186 100644
--- a/bucket/optipng.json
+++ b/bucket/optipng.json
@@ -1,18 +1,18 @@
 {
-    "version": "0.7.8",
+    "version": "7.9.1",
     "description": "A PNG optimizer that recompresses image files to a smaller size, without losing any information.",
     "homepage": "https://optipng.sourceforge.net/",
     "license": "Zlib",
     "architecture": {
         "32bit": {
-            "url": "https://downloads.sourceforge.net/project/optipng/OptiPNG/optipng-0.7.8/optipng-0.7.8-win32.zip",
-            "hash": "sha1:746a398eef9d5ae7df4388c2dad6d5ae73ae18d7",
-            "extract_dir": "optipng-0.7.8-win32"
+            "url": "https://downloads.sourceforge.net/project/optipng/OptiPNG/optipng-7.9.1/optipng-7.9.1-win32.zip",
+            "hash": "sha1:b92870351839421dca0bd4fb84d9b442d82a90eb",
+            "extract_dir": "optipng-7.9.1-win32"
         },
         "64bit": {
-            "url": "https://downloads.sourceforge.net/project/optipng/OptiPNG/optipng-0.7.8/optipng-0.7.8-win64.zip",
-            "hash": "sha1:c1a2783fb5c5798710a63f69c9be288d6e91ec0f",
-            "extract_dir": "optipng-0.7.8-win64"
+            "url": "https://downloads.sourceforge.net/project/optipng/OptiPNG/optipng-7.9.1/optipng-7.9.1-win64.zip",
+            "hash": "sha1:a9ab17ac6cd969b48cdef6225afbfc883978aaad",
+            "extract_dir": "optipng-7.9.1-win64"
         }
     },
     "bin": "optipng.exe",