diff --git a/Dockerfile b/Dockerfile
index 3f0675f..eeace87 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
-FROM ubuntu:19.04
+FROM ubuntu:20.04
 
-RUN apt update && apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
 	clang-format python3 \
         && rm -rf /var/lib/apt/lists/*
 
diff --git a/run-clang-format b/run-clang-format
index 50fc7ad..de6e8ca 160000
--- a/run-clang-format
+++ b/run-clang-format
@@ -1 +1 @@
-Subproject commit 50fc7ad73e596225955fe90226ee7870b28febf2
+Subproject commit de6e8ca07d171a7f378d379ff252a00f2905e81d