diff --git a/package-lock.json b/package-lock.json
index 14cbf4b..e0a6a15 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@lumeer/lumeer-gantt",
-  "version": "1.2.0",
+  "version": "1.2.8",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@lumeer/lumeer-gantt",
-      "version": "1.2.0",
+      "version": "1.2.8",
       "license": "MIT",
       "dependencies": {
         "moment": "^2.29.4"
@@ -15,7 +15,7 @@
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         "deepmerge": "^4.3.1",
         "jest": "^29.5.0",
-        "postcss-simple-vars": "^5.0.2",
+        "postcss-simple-vars": "^7.0.1",
         "prettier": "~2.8.8",
         "rollup": "^3.25.2",
         "rollup-plugin-commonjs": "^10.1.0",
@@ -6541,9 +6541,9 @@
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-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.24.tgz",
-      "integrity": "sha512-M0RzbcI0sO/XJNucsGjvWU9ERWxb/ytp1w6dKtxTKgixdtQDq4rmx/g8W1hnaheq9jgwL/oyEdH5Bc4WwJKMqg==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "dev": true,
       "funding": [
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@@ -7064,35 +7064,19 @@
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     "node_modules/postcss-simple-vars": {
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-      "resolved": "https://registry.npmjs.org/postcss-simple-vars/-/postcss-simple-vars-5.0.2.tgz",
-      "integrity": "sha512-xWIufxBoINJv6JiLb7jl5oElgp+6puJwvT5zZHliUSydoLz4DADRB3NDDsYgfKVwojn4TDLiseoC65MuS8oGGg==",
-      "dev": true,
-      "dependencies": {
-        "postcss": "^7.0.14"
-      }
-    },
-    "node_modules/postcss-simple-vars/node_modules/picocolors": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-0.2.1.tgz",
-      "integrity": "sha512-cMlDqaLEqfSaW8Z7N5Jw+lyIW869EzT73/F5lhtY9cLGoVxSXznfgfXMO0Z5K0o0Q2TkTXq+0KFsdnSe3jDViA==",
-      "dev": true
-    },
-    "node_modules/postcss-simple-vars/node_modules/postcss": {
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-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.39.tgz",
-      "integrity": "sha512-yioayjNbHn6z1/Bywyb2Y4s3yvDAeXGOyxqD+LnVOinq6Mdmd++SW2wUNVzavyyHxd6+DxzWGIuosg6P1Rj8uA==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/postcss-simple-vars/-/postcss-simple-vars-7.0.1.tgz",
+      "integrity": "sha512-5GLLXaS8qmzHMOjVxqkk1TZPf1jMqesiI7qLhnlyERalG0sMbHIbJqrcnrpmZdKCLglHnRHoEBB61RtGTsj++A==",
       "dev": true,
-      "dependencies": {
-        "picocolors": "^0.2.1",
-        "source-map": "^0.6.1"
-      },
       "engines": {
-        "node": ">=6.0.0"
+        "node": ">=14.0"
       },
       "funding": {
         "type": "opencollective",
         "url": "https://opencollective.com/postcss/"
+      },
+      "peerDependencies": {
+        "postcss": "^8.2.1"
       }
     },
     "node_modules/postcss-svgo": {
@@ -13791,9 +13775,9 @@
       "dev": true
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     "postcss": {
-      "version": "8.4.24",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.24.tgz",
-      "integrity": "sha512-M0RzbcI0sO/XJNucsGjvWU9ERWxb/ytp1w6dKtxTKgixdtQDq4rmx/g8W1hnaheq9jgwL/oyEdH5Bc4WwJKMqg==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "dev": true,
       "peer": true,
       "requires": {
@@ -14107,31 +14091,11 @@
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     "postcss-simple-vars": {
-      "version": "5.0.2",
-      "resolved": "https://registry.npmjs.org/postcss-simple-vars/-/postcss-simple-vars-5.0.2.tgz",
-      "integrity": "sha512-xWIufxBoINJv6JiLb7jl5oElgp+6puJwvT5zZHliUSydoLz4DADRB3NDDsYgfKVwojn4TDLiseoC65MuS8oGGg==",
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/postcss-simple-vars/-/postcss-simple-vars-7.0.1.tgz",
+      "integrity": "sha512-5GLLXaS8qmzHMOjVxqkk1TZPf1jMqesiI7qLhnlyERalG0sMbHIbJqrcnrpmZdKCLglHnRHoEBB61RtGTsj++A==",
       "dev": true,
-      "requires": {
-        "postcss": "^7.0.14"
-      },
-      "dependencies": {
-        "picocolors": {
-          "version": "0.2.1",
-          "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-0.2.1.tgz",
-          "integrity": "sha512-cMlDqaLEqfSaW8Z7N5Jw+lyIW869EzT73/F5lhtY9cLGoVxSXznfgfXMO0Z5K0o0Q2TkTXq+0KFsdnSe3jDViA==",
-          "dev": true
-        },
-        "postcss": {
-          "version": "7.0.39",
-          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.39.tgz",
-          "integrity": "sha512-yioayjNbHn6z1/Bywyb2Y4s3yvDAeXGOyxqD+LnVOinq6Mdmd++SW2wUNVzavyyHxd6+DxzWGIuosg6P1Rj8uA==",
-          "dev": true,
-          "requires": {
-            "picocolors": "^0.2.1",
-            "source-map": "^0.6.1"
-          }
-        }
-      }
+      "requires": {}
     },
     "postcss-svgo": {
       "version": "5.1.0",
diff --git a/package.json b/package.json
index aacf142..635f9af 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
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     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-watch": "^4.3.1",
-    "postcss-simple-vars": "^5.0.2",
+    "postcss-simple-vars": "^7.0.1",
     "typescript": "^5.1.3"
   },
   "eslintIgnore": [