diff --git a/playwright/Dockerfile b/playwright/Dockerfile
index 99b2d57..8d7236d 100644
--- a/playwright/Dockerfile
+++ b/playwright/Dockerfile
@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/playwright:v1.52.0-jammy
+FROM mcr.microsoft.com/playwright:v1.52.0-jammy@sha256:ff2946177f0756c87482c0ef958b7cfbf389b92525ace78a1c9890281d0d60f4
 
 WORKDIR /work/element-desktop