diff --git a/css/font-awesome.css b/css/font-awesome.css
index b76b4d733..1dfc7fa78 100644
--- a/css/font-awesome.css
+++ b/css/font-awesome.css
@@ -1335,3 +1335,6 @@
 .fa-slack:before {
   content: "\f198";
 }
+.fa-envelope-square:before {
+  content: "\f199";
+}
diff --git a/css/font-awesome.min.css b/css/font-awesome.min.css
index b76b4d733..1dfc7fa78 100644
--- a/css/font-awesome.min.css
+++ b/css/font-awesome.min.css
@@ -1335,3 +1335,6 @@
 .fa-slack:before {
   content: "\f198";
 }
+.fa-envelope-square:before {
+  content: "\f199";
+}
diff --git a/fonts/FontAwesome.otf b/fonts/FontAwesome.otf
index cd19d55d7..249e48ca7 100644
Binary files a/fonts/FontAwesome.otf and b/fonts/FontAwesome.otf differ
diff --git a/less/icons.less b/less/icons.less
index bdfa1de88..3f402f79b 100644
--- a/less/icons.less
+++ b/less/icons.less
@@ -412,3 +412,4 @@
 .@{fa-css-prefix}-plus-square-o:before { content: @fa-var-plus-square-o; }
 .@{fa-css-prefix}-space-shuttle:before { content: @fa-var-space-shuttle; }
 .@{fa-css-prefix}-slack:before { content: @fa-var-slack; }
+.@{fa-css-prefix}-envelope-square:before { content: @fa-var-envelope-square; }
diff --git a/less/variables.less b/less/variables.less
index 3d5d5e75c..7779198d2 100644
--- a/less/variables.less
+++ b/less/variables.less
@@ -380,4 +380,5 @@
 @fa-var-plus-square-o: "\f196";
 @fa-var-space-shuttle: "\f197";
 @fa-var-slack: "\f198";
+@fa-var-envelope-square: "\f199";
 
diff --git a/scss/_icons.scss b/scss/_icons.scss
index 52b7bebdd..f86ac37a0 100644
--- a/scss/_icons.scss
+++ b/scss/_icons.scss
@@ -412,3 +412,4 @@
 .#{$fa-css-prefix}-plus-square-o:before { content: $fa-var-plus-square-o; }
 .#{$fa-css-prefix}-space-shuttle:before { content: $fa-var-space-shuttle; }
 .#{$fa-css-prefix}-slack:before { content: $fa-var-slack; }
+.#{$fa-css-prefix}-envelope-square:before { content: $fa-var-envelope-square; }
diff --git a/scss/_variables.scss b/scss/_variables.scss
index 982c694ae..1732a85b9 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -380,4 +380,5 @@ $fa-var-try: "\f195";
 $fa-var-plus-square-o: "\f196";
 $fa-var-space-shuttle: "\f197";
 $fa-var-slack: "\f198";
+$fa-var-envelope-square: "\f199";
 
diff --git a/src/assets/font-awesome/fonts/FontAwesome.otf b/src/assets/font-awesome/fonts/FontAwesome.otf
index cd19d55d7..249e48ca7 100644
Binary files a/src/assets/font-awesome/fonts/FontAwesome.otf and b/src/assets/font-awesome/fonts/FontAwesome.otf differ
diff --git a/src/icons.yml b/src/icons.yml
index 3518bb811..07fe0362a 100644
--- a/src/icons.yml
+++ b/src/icons.yml
@@ -2725,3 +2725,10 @@ icons:
     created:    4.1
     categories:
       - Brand Icons
+
+  - name:       Envelope Square
+    id:         envelope-square
+    unicode:    f199
+    created:    4.1
+    categories:
+      - Web Application Icons