diff --git a/CHANGELOG.md b/CHANGELOG.md
index e57a17a7..5f27df43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 **v5.6.0(unreleased):**
 
 * final_grades.csv: notebook name is the file name for each row instead of the full path to the notebook and the rows are sorted by notebook name
+* Added backwards compatibility to Otter Grade for autograder configuration zip files generated in previous major versions of Otter-grader
 
 **v5.5.0:**
 
diff --git a/otter/grade/Dockerfile b/otter/grade/Dockerfile
index ba556e2e..ea78fbe0 100644
--- a/otter/grade/Dockerfile
+++ b/otter/grade/Dockerfile
@@ -4,7 +4,7 @@ FROM ${BASE_IMAGE}
 ARG DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update && \
-    apt-get install -y curl unzip dos2unix && \
+    apt-get install -y curl unzip dos2unix wget && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /var/tmp/*