diff --git a/README.md b/README.md
index 82183a6..5808891 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,9 @@ Sentry reporting, starting with js-controller 3.0, means that this adapter can u
 	Placeholder for the next version (at the beginning of the line):
 	### **WORK IN PROGRESS**
 -->
+### **WORK IN PROGRESS**
+* (jens-maus) updated node-ical to latest 0.17.1
+
 ### 1.13.4 (2023-12-10)
 * (jens-maus) updated node-ical to latest 0.17.0
 * (jens-maus) updated dependencies
diff --git a/package-lock.json b/package-lock.json
index 3b74ec6..f05489f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,8 +13,8 @@
         "axios": "1.6.2",
         "cloneextend": "^0.0.3",
         "json-schema": "^0.4.0",
-        "node-ical": "^0.17.0",
-        "rrule": "2.8.1"
+        "node-ical": "^0.17.1",
+        "rrule": "2.7.1"
       },
       "devDependencies": {
         "@alcalzone/release-script": "^3.7.0",
@@ -3515,13 +3515,13 @@
       }
     },
     "node_modules/node-ical": {
-      "version": "0.17.0",
-      "resolved": "https://registry.npmjs.org/node-ical/-/node-ical-0.17.0.tgz",
-      "integrity": "sha512-Tn1vQF91PeP0Lrkom5Agj+zGV9K1EspCF07zujuji8fs7hTqsgdBBlUwlSFYez/QannfD9tRKJYkz15Sz+SVLg==",
+      "version": "0.17.1",
+      "resolved": "https://registry.npmjs.org/node-ical/-/node-ical-0.17.1.tgz",
+      "integrity": "sha512-2vhc/tzO9rnvok3UtQxqKCAg0N6HfLnQzcfLGIHJotKuqlrcn7aCm8AgpB10m033JpJNng/EXxaQMCKIJycMwQ==",
       "dependencies": {
         "axios": "1.6.2",
         "moment-timezone": "^0.5.31",
-        "rrule": "2.8.1",
+        "rrule": "2.7.1",
         "uuid": "^9.0.0"
       }
     },
@@ -3983,9 +3983,9 @@
       }
     },
     "node_modules/rrule": {
-      "version": "2.8.1",
-      "resolved": "https://registry.npmjs.org/rrule/-/rrule-2.8.1.tgz",
-      "integrity": "sha512-hM3dHSBMeaJ0Ktp7W38BJZ7O1zOgaFEsn41PDk+yHoEtfLV+PoJt9E9xAlZiWgf/iqEqionN0ebHFZIDAp+iGw==",
+      "version": "2.7.1",
+      "resolved": "https://registry.npmjs.org/rrule/-/rrule-2.7.1.tgz",
+      "integrity": "sha512-4p20u/1U7WqR3Nb1hOUrm0u1nSI7sO93ZUVZEZ5HeF6Gr5OlJuyhwEGRvUHq8ZfrPsq5gfa5b9dqnUs/kPqpIw==",
       "dependencies": {
         "tslib": "^2.4.0"
       }
diff --git a/package.json b/package.json
index 1914fee..e80dba6 100644
--- a/package.json
+++ b/package.json
@@ -43,8 +43,8 @@
     "axios": "1.6.2",
     "cloneextend": "^0.0.3",
     "json-schema": "^0.4.0",
-    "node-ical": "^0.17.0",
-    "rrule": "2.8.1"
+    "node-ical": "^0.17.1",
+    "rrule": "2.7.1"
   },
   "devDependencies": {
     "@alcalzone/release-script": "^3.7.0",