diff --git a/manifest.toml b/manifest.toml
index cf476ec..c8343c9 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -55,8 +55,8 @@ ram.runtime = "200M"
     autoupdate.strategy = "latest_github_release"
 
     [resources.sources.libheif]
-    url = "https://github.com/strukturag/libheif/releases/download/v1.17.6/libheif-1.17.6.tar.gz"
-    sha256 = "8390baf4913eda0a183e132cec62b875fb2ef507ced5ddddc98dfd2f17780aee"
+    url = "https://github.com/strukturag/libheif/releases/download/v1.18.0/libheif-1.18.0.tar.gz"
+    sha256 = "3f25f516d84401d7c22a24ef313ae478781b95f235c250b06152701c401055c3"
 
     autoupdate.strategy = "latest_github_release"
     autoupdate.upstream = "https://github.com/strukturag/libheif"