diff --git a/package-lock.json b/package-lock.json
index d0c7a56..2064b20 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5472,7 +5472,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -5493,12 +5494,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "1.0.0",
             "concat-map": "0.0.1"
@@ -5513,17 +5516,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -5640,7 +5646,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -5652,6 +5659,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -5666,6 +5674,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.11"
           }
@@ -5673,12 +5682,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.1.2",
             "yallist": "3.0.3"
@@ -5697,6 +5708,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -5777,7 +5789,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -5789,6 +5802,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -5874,7 +5888,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -5910,6 +5925,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
@@ -5929,6 +5945,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -5972,12 +5989,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -7578,9 +7597,9 @@
       }
     },
     "lazysizes": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/lazysizes/-/lazysizes-3.0.0.tgz",
-      "integrity": "sha1-sbrLWg8oET/6ezic4vNfHP8Z2bk=",
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/lazysizes/-/lazysizes-5.2.1.tgz",
+      "integrity": "sha512-607dEMlbcnkny2lGYVqoA/rQO+WGpWh/BISeS1eLfT8nHQw6E+R8ybJoKKGVlZ2czKPTATrsU95f+nkwix0fXw==",
       "dev": true
     },
     "lcid": {
diff --git a/package.json b/package.json
index 6439c02..80c53d5 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "webpack": "^4.35.2",
     "webpack-cli": "^3.3.5",
     "ncp": "2.0.0",
-    "lazysizes": "^3.0.0-rc4",
+    "lazysizes": "^5.2.1",
     "critical": "^1.3.4",
     "aws-sdk": "^2.497.0",
     "recursive-readdir": "^2.2.2",