diff --git a/postorius/Dockerfile.dev b/postorius/Dockerfile.dev
index a5d0041..e427a1c 100644
--- a/postorius/Dockerfile.dev
+++ b/postorius/Dockerfile.dev
@@ -32,7 +32,7 @@ RUN --mount=type=cache,target=/root/.cache \
 		django-utils-six \
     && python3 -m pip install -U 'Django<3.2' \
     && python3 -m pip install -U \
-       git+https://gitlab.com/mailman/django-mailman3@${DJ_MM3_REF} \
+       git+https://gitlab.com/mailman/django-mailman3 \
 	&& apk del .build-deps \
 	&& addgroup -S mailman \
 	&& adduser -S -G mailman mailman \
diff --git a/web/Dockerfile.dev b/web/Dockerfile.dev
index 6d22688..9b2809c 100644
--- a/web/Dockerfile.dev
+++ b/web/Dockerfile.dev
@@ -38,7 +38,7 @@ RUN --mount=type=cache,target=/root/.cache \
         django-utils-six \
     && python3 -m pip install -U 'Django<3.2' \
     && python3 -m pip install -U \
-       git+https://gitlab.com/mailman/django-mailman3@${DJ_MM3_REF} \
+       git+https://gitlab.com/mailman/django-mailman3 \
     && apk del .build-deps \
     && addgroup -S mailman \
     && adduser -S -G mailman mailman \