diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6bfeae8..045f434 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## 1.20.1 – 2024-09-12
+### Fixed
+- fix(versions): Fix compatibility with files_versions and PHP strict types
+
 ## 1.20.0 – 2024-07-30
 ### Changed
 - Require Nextcloud 30
diff --git a/lib/Operation.php b/lib/Operation.php
index ce4cf35..1fa523a 100644
--- a/lib/Operation.php
+++ b/lib/Operation.php
@@ -134,7 +134,10 @@ protected function translatePath(IStorage $storage, string $path): string {
 		[$folder, $innerPath] = explode('/', $path, 2);
 
 		if ($folder === 'files_versions') {
-			$innerPath = substr($innerPath, 0, strrpos($innerPath, '.v'));
+			if (preg_match('/.+\.v\d{10}$/', basename($innerPath))) {
+				// Remove trailing ".v{timestamp}"
+				$innerPath = substr($innerPath, 0, -12);
+			}
 			return 'files/' . $innerPath;
 		} elseif ($folder === 'thumbnails') {
 			[$fileId,] = explode('/', $innerPath, 2);
diff --git a/tests/psalm-baseline.xml b/tests/psalm-baseline.xml
index b6b2f69..b17e249 100644
--- a/tests/psalm-baseline.xml
+++ b/tests/psalm-baseline.xml
@@ -18,9 +18,6 @@
     <MissingDependency>
       <code><![CDATA[StorageWrapper]]></code>
     </MissingDependency>
-    <PossiblyFalseArgument>
-      <code><![CDATA[strrpos($innerPath, '.v')]]></code>
-    </PossiblyFalseArgument>
     <PossiblyUndefinedArrayOffset>
       <code><![CDATA[$innerPath]]></code>
     </PossiblyUndefinedArrayOffset>