diff --git a/.changes/json5-capability-files.md b/.changes/json5-capability-files.md
new file mode 100644
index 000000000..b0fe7fb54
--- /dev/null
+++ b/.changes/json5-capability-files.md
@@ -0,0 +1,6 @@
+---
+"tauri": patch:bug
+"tauri-utils": patch:bug
+---
+
+Fix `.json5` capability files not recognized even with `config-json5` feature enabled
diff --git a/crates/tauri-utils/src/acl/build.rs b/crates/tauri-utils/src/acl/build.rs
index d32eb0232..12ce4e9e0 100644
--- a/crates/tauri-utils/src/acl/build.rs
+++ b/crates/tauri-utils/src/acl/build.rs
@@ -34,7 +34,12 @@ pub const PERMISSION_FILE_EXTENSIONS: &[&str] = &["json", "toml"];
 pub const PERMISSION_DOCS_FILE_NAME: &str = "reference.md";
 
 /// Allowed capability file extensions
-const CAPABILITY_FILE_EXTENSIONS: &[&str] = &["json", "toml"];
+const CAPABILITY_FILE_EXTENSIONS: &[&str] = &[
+  "json",
+  #[cfg(feature = "config-json5")]
+  "json5",
+  "toml",
+];
 
 /// Known folder name of the capability schemas
 const CAPABILITIES_SCHEMA_FOLDER_NAME: &str = "schemas";
diff --git a/crates/tauri-utils/src/acl/capability.rs b/crates/tauri-utils/src/acl/capability.rs
index 9ac56f3ed..d5aeb3a79 100644
--- a/crates/tauri-utils/src/acl/capability.rs
+++ b/crates/tauri-utils/src/acl/capability.rs
@@ -267,6 +267,8 @@ impl CapabilityFile {
     let file: Self = match ext.as_str() {
       "toml" => toml::from_str(&capability_file)?,
       "json" => serde_json::from_str(&capability_file)?,
+      #[cfg(feature = "config-json5")]
+      "json5" => json5::from_str(&capability_file)?,
       _ => return Err(super::Error::UnknownCapabilityFormat(ext)),
     };
     Ok(file)
diff --git a/crates/tauri-utils/src/acl/mod.rs b/crates/tauri-utils/src/acl/mod.rs
index 40e475fde..7821b7c06 100644
--- a/crates/tauri-utils/src/acl/mod.rs
+++ b/crates/tauri-utils/src/acl/mod.rs
@@ -103,6 +103,11 @@ pub enum Error {
   #[error("failed to parse JSON: {0}")]
   Json(#[from] serde_json::Error),
 
+  /// Invalid JSON5 encountered
+  #[cfg(feature = "config-json5")]
+  #[error("failed to parse JSON5: {0}")]
+  Json5(#[from] json5::Error),
+
   /// Invalid permissions file format
   #[error("unknown permission format {0}")]
   UnknownPermissionFormat(String),