diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 72df6038c..54e31c617 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -587,3 +587,5 @@ contributors:
 
 * Allan Chandler (allanc65): contributor
   - Fixed issue 5452, false positive missing-param-doc for multi-line Google-style params
+
+* Eero Vuojolahti: contributor
diff --git a/Dockerfile b/Dockerfile
index aafe62a6a..2667145da 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.0-alpine3.12
+FROM python:3.10.0-alpine3.15
 
 COPY ./ /tmp/build
 WORKDIR /tmp/build