diff --git a/base/Dockerfile b/base/Dockerfile
index 43acb29..813fa36 100644
--- a/base/Dockerfile
+++ b/base/Dockerfile
@@ -3,7 +3,7 @@ FROM python:slim
 LABEL org.opencontainers.image.authors = "Sphinx Team <https://www.sphinx-doc.org/>"
 LABEL org.opencontainers.image.documentation = "https://sphinx-doc.org/"
 LABEL org.opencontainers.image.source = "https://github.com/sphinx-doc/sphinx-docker-images"
-LABEL org.opencontainers.image.version = "7.3.0"
+LABEL org.opencontainers.image.version = "7.3.1"
 LABEL org.opencontainers.image.licenses = "BSD-2-Clause"
 LABEL org.opencontainers.image.description = "Base container image for Sphinx"
 
@@ -18,6 +18,6 @@ RUN apt-get update \
  && rm -rf /var/lib/apt/lists/*
 
 RUN python3 -m pip install --no-cache-dir --upgrade pip \
- && python3 -m pip install --no-cache-dir Sphinx==7.3.0 Pillow
+ && python3 -m pip install --no-cache-dir Sphinx==7.3.1 Pillow
 
 CMD ["sphinx-build", "-M", "html", ".", "_build"]
diff --git a/latexpdf/Dockerfile b/latexpdf/Dockerfile
index 5dba2e7..2ed2c01 100644
--- a/latexpdf/Dockerfile
+++ b/latexpdf/Dockerfile
@@ -3,7 +3,7 @@ FROM python:slim
 LABEL org.opencontainers.image.authors = "Sphinx Team <https://www.sphinx-doc.org/>"
 LABEL org.opencontainers.image.documentation = "https://sphinx-doc.org/"
 LABEL org.opencontainers.image.source = "https://github.com/sphinx-doc/sphinx-docker-images"
-LABEL org.opencontainers.image.version = "7.3.0"
+LABEL org.opencontainers.image.version = "7.3.1"
 LABEL org.opencontainers.image.licenses = "BSD-2-Clause"
 LABEL org.opencontainers.image.description = "LaTeX container image for Sphinx"
 
@@ -33,6 +33,6 @@ RUN apt-get update \
  && rm -rf /var/lib/apt/lists/*
 
 RUN python3 -m pip install --no-cache-dir --upgrade pip \
- && python3 -m pip install --no-cache-dir Sphinx==7.3.0 Pillow
+ && python3 -m pip install --no-cache-dir Sphinx==7.3.1 Pillow
 
 CMD ["sphinx-build", "-M", "latexpdf", ".", "_build"]