diff --git a/DockerFiles/clang10/Dockerfile b/DockerFiles/clang10/Dockerfile
index f717cbd9..08e62572 100644
--- a/DockerFiles/clang10/Dockerfile
+++ b/DockerFiles/clang10/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:hirsute
+FROM ubuntu:focal
 
 # Prevents "Configuring tzdata" dialog from stalling build
 ENV DEBIAN_FRONTEND=noninteractive
diff --git a/DockerFiles/gcc10/Dockerfile b/DockerFiles/gcc10/Dockerfile
index d3121cff..fa0e62b5 100644
--- a/DockerFiles/gcc10/Dockerfile
+++ b/DockerFiles/gcc10/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:hirsute
+FROM ubuntu:focal
 
 # Prevents "Configuring tzdata" dialog from stalling build
 ENV DEBIAN_FRONTEND=noninteractive