diff --git a/centos-7/Dockerfile b/centos-7/Dockerfile
index 6d60037c005a9606bc4183fab2b866b1be1c8d3d..7cd2a12250d1567137acd09631b14e9252ac12fa 100644
--- a/centos-7/Dockerfile
+++ b/centos-7/Dockerfile
@@ -8,7 +8,7 @@ LABEL authors="Moritz Maxeiner <moritz.maxeiner@fu-berlin.de>"
 ENV BASH_ENV "/etc/profile"
 RUN yum install -y centos-release-scl && \
     yum install -y epel-release && \
-    yum install -y devtoolset-9 && \
+    yum install -y devtoolset-8 && \
     yum install -y rh-git218-git && \
     yum clean all
 ADD bash/toolchain.sh /etc/profile.d/toolchain.sh
diff --git a/centos-7/bash/toolchain.sh b/centos-7/bash/toolchain.sh
index 63e1a96ed7328f5140775046ea353f84aeb3e843..2e7ccc2156f84c9ee29e8179e7cb40f81ef8e056 100644
--- a/centos-7/bash/toolchain.sh
+++ b/centos-7/bash/toolchain.sh
@@ -1,5 +1,5 @@
-# GCC 9
-source scl_source enable devtoolset-9
+# GCC 8
+source scl_source enable devtoolset-8
 
 # Git 2.18
 source scl_source enable rh-git218