diff --git a/Dockerfile.demo b/Dockerfile.demo
index a845a7f..47a4c90 100644
--- a/Dockerfile.demo
+++ b/Dockerfile.demo
@@ -1,4 +1,4 @@
-FROM clfoundation/sbcl:2.5.10 as builder
+FROM clfoundation/sbcl:2.6.1 as builder
 
 ENV QUICKLISP_ADD_TO_INIT_FILE=true
 
diff --git a/Dockerfile.intro b/Dockerfile.intro
index 9508755..7cc81de 100644
--- a/Dockerfile.intro
+++ b/Dockerfile.intro
@@ -1,4 +1,4 @@
-FROM clfoundation/sbcl:2.5.10 as builder
+FROM clfoundation/sbcl:2.6.1 as builder
 
 ENV QUICKLISP_ADD_TO_INIT_FILE=true
 
diff --git a/Dockerfile.sbcl b/Dockerfile.sbcl
index ab4add7..c847646 100644
--- a/Dockerfile.sbcl
+++ b/Dockerfile.sbcl
@@ -1,4 +1,4 @@
-FROM clfoundation/sbcl:2.5.10
+FROM clfoundation/sbcl:2.6.1
 
 ENV QUICKLISP_ADD_TO_INIT_FILE=true
 ENV QUICKLISP_DIST_VERSION=latest
diff --git a/Dockerfile.tests b/Dockerfile.tests
index f38a17b..8882009 100644
--- a/Dockerfile.tests
+++ b/Dockerfile.tests
@@ -1,4 +1,4 @@
-FROM clfoundation/sbcl:2.5.10
+FROM clfoundation/sbcl:2.6.1
 
 ENV QUICKLISP_ADD_TO_INIT_FILE=true
 WORKDIR /root/quicklisp/local-projects/clingon