diff --git a/Dockerfile b/Dockerfile
index 66487d3..0358281 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -137,6 +137,7 @@ RUN install-ubuntu-packages \
     libxpm-dev \
     libz-dev \
     libzstd-dev \
+    nlohmann-json3-dev \
     srm-ifce-dev \
     libgsl-dev
 
diff --git a/README.md b/README.md
index 266faf8..0369c9b 100644
--- a/README.md
+++ b/README.md
@@ -40,10 +40,11 @@ Software Package | Version | Construction Process
 [Ubuntu Server](https://ubuntu.com/) | 24.04 | Base Image
 [Python](https://www.python.org/) | 3.12.3 | From Ubuntu Repos
 [cmake](https://cmake.org/) | 3.28.3 | From Ubuntu Repos
-[Boost](https://www.boost.org/doc/libs/1_74_0/) | 1.83.0 | From Ubuntu Repos
+[Boost](https://www.boost.org/doc/libs/1_83_0/) | 1.83.0 | From Ubuntu Repos
 [XercesC](http://xerces.apache.org/xerces-c/) | 3.3.0 | Built from source
 [LHAPDF](https://www.lhapdf.org/) | 6.5.5 | Built from source
 [Pythia8](https://pythia.org/) | 8.313 | Built from source
+[nlohmann/json](https://json.nlohmann.me/) | 3.11.3 | From Ubuntu Repos
 [ROOT](https://root.cern.ch/) | 6.34.04 | Built from source
 [Geant4](https://geant4.web.cern.ch/) | [LDMX.10.2.3\_v0.6](https://github.com/LDMX-Software/geant4/tree/LDMX.10.2.3_v0.6) | Built from source
 [Eigen](https://eigen.tuxfamily.org/index.php?title=Main_Page) | 3.4.0 | Built from source
diff --git a/docs/src/ubuntu-packages.md b/docs/src/ubuntu-packages.md
index 5fb73cd..ab1fbea 100644
--- a/docs/src/ubuntu-packages.md
+++ b/docs/src/ubuntu-packages.md
@@ -70,6 +70,7 @@ libxmu-dev | low-level window management (ROOT GUI)
 libxpm-dev | low-level window management (ROOT GUI)
 libz-dev | Data compression in ROOT serialization
 libzstd-dev | Data compression in ROOT serialization
+nlohmann-json3-dev | JSON reading/writing in ROOT and ldmx-sw
 srm-ifce-dev | [srm-ifce](https://github.com/cern-fts/srm-ifce) client side access of distributed storage within ROOT
 libgsl-dev | GNU Scientific Library for numerical calculations in ROOT MathMore (needed for GENIE)
 liblog4cpp5-dev | C++ Logging Library used in GENIE