diff --git a/package.json b/package.json
index b9be3bf..9879389 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "errorhandler": "^1.5.1",
     "express": "^4.17.1",
     "express-flash": "^0.0.2",
-    "express-handlebars": "^3.1.0",
+    "express-handlebars": "^5.3.1",
     "express-session": "^1.17.0",
     "express-status-monitor": "^1.2.7",
     "fbgraph": "^1.4.4",
diff --git a/yarn.lock b/yarn.lock
index 3f877d8..96149d8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -534,7 +534,7 @@ arrify@^2.0.0:
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-2.0.1.tgz#c9655e9331e0abcd588d2a7cad7e9956f66701fa"
   integrity sha512-3duEwti880xqi4eAMN8AyR4a0ByT90zoYdLlevfrvU43vb0YZwZVfxOgxWrLXXXpyugL0hNZc9G6BiB5B3nUug==
 
-asap@^2.0.0, asap@~2.0.3, asap@~2.0.6:
+asap@^2.0.0, asap@~2.0.3:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
   integrity sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY=
@@ -1829,16 +1829,14 @@ express-flash@^0.0.2:
   dependencies:
     connect-flash "0.1.x"
 
-express-handlebars@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/express-handlebars/-/express-handlebars-3.1.0.tgz#c177ee9a81f6a2abada6b550b77b3e30c6bc0796"
-  integrity sha512-7QlaXnSREMmN5P2o4gmpUZDfJlLtfBka9d6r7/ccXaU7rPp76odw9YYtwZYdIiha2JqwiaG6o2Wu6NZJQ0u7Fg==
+express-handlebars@^5.3.1:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/express-handlebars/-/express-handlebars-5.3.1.tgz#ab97d4e5ecb3780c12564ea7553e5fe4687b0406"
+  integrity sha512-mHpf3PAYysgo6M2yl/r0p5ui/gHwVa7vLBgA3ht8HlNxRGcwXSAGOwKAtAEVdHs4j7FDb5ZGsAJoA8nFaogbGw==
   dependencies:
-    glob "^7.1.3"
-    graceful-fs "^4.1.2"
-    handlebars "^4.1.2"
-    object.assign "^4.1.0"
-    promise "^8.0.2"
+    glob "^7.1.6"
+    graceful-fs "^4.2.6"
+    handlebars "^4.7.7"
 
 express-session@^1.17.0:
   version "1.17.1"
@@ -2221,7 +2219,19 @@ glob@7.1.3:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^7.0.0, glob@^7.0.3, glob@^7.1.2, glob@^7.1.3, glob@~7.1.1:
+glob@^7.0.0, glob@^7.0.3, glob@^7.1.2, glob@^7.1.3, glob@^7.1.6:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.2.0.tgz#d15535af7732e02e948f4c41628bd910293f6023"
+  integrity sha512-lmLf6gtyrPq8tTjSmrO94wBeQbFR3HbLHbuyD69wuyQkImp2hWqMGB47OX65FBkPffO641IP9jWa1z4ivqG26Q==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+glob@~7.1.1:
   version "7.1.6"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
   integrity sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==
@@ -2296,10 +2306,10 @@ googleapis@^45.0.0:
     google-auth-library "^5.2.0"
     googleapis-common "^3.1.0"
 
-graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.2:
-  version "4.2.4"
-  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.4.tgz#2256bde14d3632958c465ebc96dc467ca07a29fb"
-  integrity sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw==
+graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.2, graceful-fs@^4.2.6:
+  version "4.2.9"
+  resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.9.tgz#041b05df45755e587a24942279b9d113146e1c96"
+  integrity sha512-NtNxqUcXgpW2iMrfqSfR73Glt39K+BLwWsPs94yR63v45T0Wbej7eRmL5cWfwEgqXnmjQp3zaJTshdRW/qC2ZQ==
 
 growl@1.10.5:
   version "1.10.5"
@@ -2316,10 +2326,10 @@ gtoken@^4.1.0:
     jws "^4.0.0"
     mime "^2.2.0"
 
-handlebars@^4.1.2, handlebars@^4.7.6:
-  version "4.7.6"
-  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.7.6.tgz#d4c05c1baf90e9945f77aa68a7a219aa4a7df74e"
-  integrity sha512-1f2BACcBfiwAfStCKZNrUCgqNZkGsAT7UM3kkYtXuLo0KnaVfjKOyf7PRzB6++aK9STyT1Pd2ZCPe3EGOXleXA==
+handlebars@^4.7.6, handlebars@^4.7.7:
+  version "4.7.7"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.7.7.tgz#9ce33416aad02dbd6c8fafa8240d5d98004945a1"
+  integrity sha512-aAcXm5OAfE/8IXkcZvCepKU3VzW1/39Fb5ZuqMtgI/hT8X2YgoMvBY5dLhq/cpOvw7Lk1nK/UF71aLG/ZnVYRA==
   dependencies:
     minimist "^1.2.5"
     neo-async "^2.6.0"
@@ -4208,13 +4218,6 @@ promise@^7.0.1:
   dependencies:
     asap "~2.0.3"
 
-promise@^8.0.2:
-  version "8.1.0"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-8.1.0.tgz#697c25c3dfe7435dd79fcd58c38a135888eaf05e"
-  integrity sha512-W04AqnILOL/sPRXziNicCjSNRruLAuIHEOVBazepu0545DDNGYHz7ar9ZgZ1fMU8/MA4mVxp5rkBWRi6OXIy3Q==
-  dependencies:
-    asap "~2.0.6"
-
 proxy-addr@~2.0.5:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.6.tgz#fdc2336505447d3f2f2c638ed272caf614bbb2bf"