diff --git a/ci/Dockerfile b/ci/Dockerfile
index 0694e77..6e5c74a 100644
--- a/ci/Dockerfile
+++ b/ci/Dockerfile
@@ -138,7 +138,7 @@ RUN git clone --depth=1 https://github.com/VoltLang/Watt.git && \
     rm -rf /volt
 WORKDIR /
 
-ARG KNOWN_GOOD_DRM=libdrm-2.4.97
+ARG KNOWN_GOOD_DRM=libdrm-2.4.99
 WORKDIR /drm
 RUN git clone --shallow-since="$GIT_DATE" https://gitlab.freedesktop.org/mesa/drm.git . && \
     git checkout ${KNOWN_GOOD_DRM} && \