diff --git a/os-base/Dockerfile b/os-base/Dockerfile
index 793407b..255d437 100644
--- a/os-base/Dockerfile
+++ b/os-base/Dockerfile
@@ -4,7 +4,7 @@ LABEL maintainer="Ryan Voots <simcop@cpan.org>"
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-RUN perl -i.bak -pE '$x=$_; $x=~s|^deb |deb-src |g;$_.=$x' /etc/apt/sources.list \
+RUN perl -i.bak -pE '$x=$_; $x=~s|^deb |deb-src |g;$_.=$x' /etc/apt/sources.list.d/* /etc/apt/sources.list \
     && apt update \
     && apt -yq full-upgrade \
     && apt -yq build-dep perl \