diff --git a/composer.lock b/composer.lock
index 95b11431019932063f9c3b8c68e0190fdf8d7e5b..3616d665f7dceaeed2ed14c0f2f646d0235599f1 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1016,16 +1016,16 @@
     "packages-dev": [
         {
             "name": "amphp/amp",
-            "version": "v2.4.2",
+            "version": "v2.4.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/amphp/amp.git",
-                "reference": "feca077369a47263b22156b3c6389e55f3809f24"
+                "reference": "23ac95fc6d6973231763f5ed7d1309b39429b974"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/amphp/amp/zipball/feca077369a47263b22156b3c6389e55f3809f24",
-                "reference": "feca077369a47263b22156b3c6389e55f3809f24",
+                "url": "https://api.github.com/repos/amphp/amp/zipball/23ac95fc6d6973231763f5ed7d1309b39429b974",
+                "reference": "23ac95fc6d6973231763f5ed7d1309b39429b974",
                 "shasum": ""
             },
             "require": {
@@ -1038,7 +1038,7 @@
                 "jetbrains/phpstorm-stubs": "^2019.3",
                 "phpunit/phpunit": "^6.0.9 | ^7",
                 "react/promise": "^2",
-                "vimeo/psalm": "^3.9@dev"
+                "vimeo/psalm": "^3.11@dev"
             },
             "type": "library",
             "extra": {
@@ -1090,7 +1090,7 @@
                 "non-blocking",
                 "promise"
             ],
-            "time": "2020-04-04T15:05:26+00:00"
+            "time": "2020-04-19T15:54:21+00:00"
         },
         {
             "name": "amphp/byte-stream",
@@ -2968,12 +2968,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/Roave/SecurityAdvisories.git",
-                "reference": "09afa996c68c18f49e6487b06adcb2ef27da61fa"
+                "reference": "81541a731da2f245a08666de73169cb5da7ac573"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Roave/SecurityAdvisories/zipball/09afa996c68c18f49e6487b06adcb2ef27da61fa",
-                "reference": "09afa996c68c18f49e6487b06adcb2ef27da61fa",
+                "url": "https://api.github.com/repos/Roave/SecurityAdvisories/zipball/81541a731da2f245a08666de73169cb5da7ac573",
+                "reference": "81541a731da2f245a08666de73169cb5da7ac573",
                 "shasum": ""
             },
             "conflict": {
@@ -3019,6 +3019,8 @@
                 "endroid/qr-code-bundle": "<3.4.2",
                 "enshrined/svg-sanitize": "<0.13.1",
                 "erusev/parsedown": "<1.7.2",
+                "ezsystems/demobundle": ">=5.4,<5.4.6.1",
+                "ezsystems/ezdemo-ls-extension": ">=5.4,<5.4.2.1",
                 "ezsystems/ezfind-ls": ">=5.3,<5.3.6.1|>=5.4,<5.4.11.1|>=2017.12,<2017.12.0.1",
                 "ezsystems/ezplatform": ">=1.7,<1.7.9.1|>=1.13,<1.13.5.1|>=2.5,<2.5.4",
                 "ezsystems/ezplatform-admin-ui": ">=1.3,<1.3.5|>=1.4,<1.4.6",
@@ -3107,7 +3109,7 @@
                 "silverstripe/userforms": "<3",
                 "simple-updates/phpwhois": "<=1",
                 "simplesamlphp/saml2": "<1.10.6|>=2,<2.3.8|>=3,<3.1.4",
-                "simplesamlphp/simplesamlphp": "<1.18.4",
+                "simplesamlphp/simplesamlphp": "<1.18.6",
                 "simplesamlphp/simplesamlphp-module-infocard": "<1.0.1",
                 "simplito/elliptic-php": "<1.0.6",
                 "slim/slim": "<2.6",
@@ -3224,7 +3226,7 @@
                 }
             ],
             "description": "Prevents installation of composer packages with known security vulnerabilities: no API, simply require it",
-            "time": "2020-04-15T04:56:51+00:00"
+            "time": "2020-04-23T00:01:30+00:00"
         },
         {
             "name": "sabre/event",