diff --git a/package-lock.json b/package-lock.json
index e13404e..19fda7d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "dependencies": {
         "geopattern": "^1.2.3",
         "preact": "^10.5.14",
-        "preact-render-to-string": "^5.1.19",
+        "preact-render-to-string": "^5.1.21",
         "preact-router": "^3.2.1",
         "unistore": "^3.5.2"
       },
@@ -19825,9 +19825,9 @@
       }
     },
     "node_modules/preact-render-to-string": {
-      "version": "5.1.19",
-      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.1.19.tgz",
-      "integrity": "sha512-bj8sn/oytIKO6RtOGSS/1+5CrQyRSC99eLUnEVbqUa6MzJX5dYh7wu9bmT0d6lm/Vea21k9KhCQwvr2sYN3rrQ==",
+      "version": "5.1.21",
+      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.1.21.tgz",
+      "integrity": "sha512-wbMtNU4JpfvbE04iCe7BZ1yLYN8i6NRrq+NhR0fUINjPXGu3ZIc4GM5ScOiwdIP1sPXv9SVETuud/tmQGMvdNQ==",
       "dependencies": {
         "pretty-format": "^3.8.0"
       },
@@ -42262,9 +42262,9 @@
       }
     },
     "preact-render-to-string": {
-      "version": "5.1.19",
-      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.1.19.tgz",
-      "integrity": "sha512-bj8sn/oytIKO6RtOGSS/1+5CrQyRSC99eLUnEVbqUa6MzJX5dYh7wu9bmT0d6lm/Vea21k9KhCQwvr2sYN3rrQ==",
+      "version": "5.1.21",
+      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.1.21.tgz",
+      "integrity": "sha512-wbMtNU4JpfvbE04iCe7BZ1yLYN8i6NRrq+NhR0fUINjPXGu3ZIc4GM5ScOiwdIP1sPXv9SVETuud/tmQGMvdNQ==",
       "requires": {
         "pretty-format": "^3.8.0"
       },
diff --git a/package.json b/package.json
index 54247d8..ccc639f 100644
--- a/package.json
+++ b/package.json
@@ -89,7 +89,7 @@
   "dependencies": {
     "geopattern": "^1.2.3",
     "preact": "^10.5.14",
-    "preact-render-to-string": "^5.1.19",
+    "preact-render-to-string": "^5.1.21",
     "preact-router": "^3.2.1",
     "unistore": "^3.5.2"
   },