diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4ec1a3c37b..e7cc2847a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,7 +14,7 @@ Fixed incorrect commands `dfx sns config create` and `dfx sns config validate` i
 
 ### Motoko
 
-Updated Motoko to [1.3.0](https://github.com/dfinity/motoko/releases/tag/1.3.0)
+Updated Motoko to [1.4.0](https://github.com/dfinity/motoko/releases/tag/1.4.0)
 
 ### Replica
 
diff --git a/src/dfx/assets/dfx-asset-sources.json b/src/dfx/assets/dfx-asset-sources.json
index b8a656b60d..fc6ac4d6a3 100644
--- a/src/dfx/assets/dfx-asset-sources.json
+++ b/src/dfx/assets/dfx-asset-sources.json
@@ -2,9 +2,9 @@
   "replica-rev": "142182f2ec4d916fa32e32da59239c4eb0c87bd3",
   "x86_64-darwin": {
     "motoko": {
-      "url": "https://github.com/dfinity/motoko/releases/download/1.3.0/motoko-Darwin-x86_64-1.3.0.tar.gz",
-      "sha256": "9ff678b28d596f466909878ad11bc44324b8e13d342f93c4387a0a7ddb69c6e0",
-      "version": "1.3.0"
+      "url": "https://github.com/dfinity/motoko/releases/download/1.4.0/motoko-Darwin-x86_64-1.4.0.tar.gz",
+      "sha256": "4765ea8c4cc993997062d3367317afbb258e49b83276abacd54c8b8386ecc77b",
+      "version": "1.4.0"
     },
     "pocket-ic": {
       "url": "https://download.dfinity.systems/ic/142182f2ec4d916fa32e32da59239c4eb0c87bd3/binaries/x86_64-darwin/pocket-ic.gz",
@@ -14,9 +14,9 @@
   },
   "arm64-darwin": {
     "motoko": {
-      "url": "https://github.com/dfinity/motoko/releases/download/1.3.0/motoko-Darwin-arm64-1.3.0.tar.gz",
-      "sha256": "42839e570386868ba0c37c58cee8c1a180df3f1282256c523969b8e36e53526b",
-      "version": "1.3.0"
+      "url": "https://github.com/dfinity/motoko/releases/download/1.4.0/motoko-Darwin-arm64-1.4.0.tar.gz",
+      "sha256": "2409ea8c3f4d17e5b1ebeaacc7f5eabaf5b21d8a3066f3f249e554ffd5c3e7b6",
+      "version": "1.4.0"
     },
     "pocket-ic": {
       "url": "https://download.dfinity.systems/ic/142182f2ec4d916fa32e32da59239c4eb0c87bd3/binaries/arm64-darwin/pocket-ic.gz",
@@ -26,9 +26,9 @@
   },
   "x86_64-linux": {
     "motoko": {
-      "url": "https://github.com/dfinity/motoko/releases/download/1.3.0/motoko-Linux-x86_64-1.3.0.tar.gz",
-      "sha256": "9431730367fbbdf05843bc1802c92ce0ea6fe557856ac50b1279e15339d8eff5",
-      "version": "1.3.0"
+      "url": "https://github.com/dfinity/motoko/releases/download/1.4.0/motoko-Linux-x86_64-1.4.0.tar.gz",
+      "sha256": "fd65e76a212435a11f1e972ebfd4fea3f29b2dfa7aacf71359a956740da58e59",
+      "version": "1.4.0"
     },
     "pocket-ic": {
       "url": "https://download.dfinity.systems/ic/142182f2ec4d916fa32e32da59239c4eb0c87bd3/binaries/x86_64-linux/pocket-ic.gz",
@@ -38,9 +38,9 @@
   },
   "arm64-linux": {
     "motoko": {
-      "url": "https://github.com/dfinity/motoko/releases/download/1.3.0/motoko-Linux-aarch64-1.3.0.tar.gz",
-      "sha256": "8b44348fe1680ca5be0d2d572800585ceecb9fd349b5f4bb74ef06f665f81573",
-      "version": "1.3.0"
+      "url": "https://github.com/dfinity/motoko/releases/download/1.4.0/motoko-Linux-aarch64-1.4.0.tar.gz",
+      "sha256": "64c05bed0238a12e976c837661492da622f1132c16136bc5f7fb9bf68959ddff",
+      "version": "1.4.0"
     },
     "pocket-ic": {
       "url": "https://download.dfinity.systems/ic/142182f2ec4d916fa32e32da59239c4eb0c87bd3/binaries/arm64-linux/pocket-ic.gz",
@@ -50,14 +50,14 @@
   },
   "common": {
     "motoko-base": {
-      "url": "https://github.com/dfinity/motoko/releases/download/1.3.0/motoko-base-library.tar.gz",
-      "sha256": "9328396878dc409584c4ce824d662bfcc45a07615c953d2e54300a1ffdf272b7",
-      "version": "1.3.0"
+      "url": "https://github.com/dfinity/motoko/releases/download/1.4.0/motoko-base-library.tar.gz",
+      "sha256": "201a7a209d1dc489e193030700eca994170f7f850938474767d3c9902ca3b7f0",
+      "version": "1.4.0"
     },
     "motoko-core": {
-      "url": "https://github.com/dfinity/motoko/releases/download/1.3.0/motoko-core.tar.gz",
-      "sha256": "44665492f39ad5cbe41fa976c332554135507e183f5cf6fcc532547972ed6131",
-      "version": "1.3.0"
+      "url": "https://github.com/dfinity/motoko/releases/download/1.4.0/motoko-core.tar.gz",
+      "sha256": "6cf6841e30750102b59fca7c1129aae1bfe4c4ee3c32bb1d56552235388aac56",
+      "version": "1.4.0"
     }
   }
 }