diff --git a/Dockerfile b/Dockerfile
index 19781b27577a458c340b6e629563a1b7a1ded47a..dce3728fbccc883f7b26968d341d135f4f0deb43 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,7 +11,7 @@ LABEL \
     org.label-schema.vcs-url="https://gitlab.gwdg.de/dariah-de/textgridrep/repdav" \
     org.label-schema.vendor="SUB/FE"
 
-RUN apk add --no-cache g++ icu-dev
+RUN apk add --no-cache g++=10.3.1_git20210424-r2 icu-dev=67.1-r2
 RUN adduser -D repdav
 USER repdav