diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb950e7..453f558 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.22.1] - 2024-05-15
+
+### Fixed
+    - Unit tests regression (lcov)
+
 ## [3.22.0] - 2024-05-13
 
 ### Changed
diff --git a/lite/Dockerfile b/lite/Dockerfile
index 095fddc..4c3943a 100644
--- a/lite/Dockerfile
+++ b/lite/Dockerfile
@@ -33,10 +33,12 @@ RUN python3 -m ensurepip --upgrade \
     && pip3 install --upgrade pip \
     && pip3 install wheel
 
-# lcov is only present in the testing repository of the edge branch
-RUN apk add --repository=http://dl-cdn.alpinelinux.org/alpine/edge/testing/ --repository=http://dl-cdn.alpinelinux.org/alpine/edge/community lcov
+# lcov is only present in the community repository of the edge branch but its perl-json-xs
+# dependency won't work on 3.15 so install it (from the 3.15 repo) first
+RUN apk add perl-json-xs && \
+    apk add --repository=http://dl-cdn.alpinelinux.org/alpine/edge/community lcov
 
-# This package is required by lcov
+# This package is required by lcov (but somehow not listed as such in the Alpine package)
 RUN apk add gzip
 
 # So that it still supports things incorrectly pointing to python