diff --git a/.github/workflows/docker_publish.yml b/.github/workflows/docker_publish.yml
index ddea79f9a..4801cf73d 100644
--- a/.github/workflows/docker_publish.yml
+++ b/.github/workflows/docker_publish.yml
@@ -26,7 +26,8 @@ jobs:
           1.14.3,
         ]
         moab_versions : [
-          5.3.0,
+          5.4.1,
+          5.5.1,
         ]
         double_down : [
           OFF,
@@ -88,7 +89,8 @@ jobs:
           1.14.3,
         ]
         moab_versions : [
-          5.3.0,
+          5.4.1,
+          5.5.1,
         ]
         double_down : [
           OFF,
diff --git a/.github/workflows/mac_build_test.yml b/.github/workflows/mac_build_test.yml
index a959052f7..354dc42f1 100644
--- a/.github/workflows/mac_build_test.yml
+++ b/.github/workflows/mac_build_test.yml
@@ -61,7 +61,7 @@ jobs:
           cd ${HOME}
           mkdir -pv moab/bld
           cd moab
-          git clone https://bitbucket.org/fathomteam/moab -b 5.3.0 --depth 1 --shallow-submodules
+          git clone https://bitbucket.org/fathomteam/moab -b 5.5.1 --depth 1 --shallow-submodules
           cd bld
           cmake ../moab -DENABLE_HDF5=ON \
                         -DENABLE_PYMOAB=OFF \
diff --git a/.github/workflows/windows_build_test.yml b/.github/workflows/windows_build_test.yml
index 266741670..004664742 100644
--- a/.github/workflows/windows_build_test.yml
+++ b/.github/workflows/windows_build_test.yml
@@ -64,7 +64,7 @@ jobs:
         shell: bash -l {0}
         run: |
           cd ${HOME_PATH}
-          git clone --depth 1 https://bitbucket.org/fathomteam/moab -b 5.3.0
+          git clone --depth 1 https://bitbucket.org/fathomteam/moab -b 5.5.1
           mkdir moab_build
           cd moab_build
           cmake ../moab \
diff --git a/CI/Dockerfile b/CI/Dockerfile
index c4a91015d..936072b14 100644
--- a/CI/Dockerfile
+++ b/CI/Dockerfile
@@ -7,7 +7,7 @@
 ARG EMBREE_BRANCH='v3.6.1'
 ARG geant4_version=11.1.2
 ARG UBUNTU_VERSION=20.04
-ARG MOAB_BRANCH=5.3.0
+ARG MOAB_BRANCH=5.5.1
 ARG double_down=OFF
 ARG ci_jobs=4
 ARG HDF5_VERSION=1.14.3
diff --git a/doc/CHANGELOG.rst b/doc/CHANGELOG.rst
index 0648283d1..524ca7ef4 100644
--- a/doc/CHANGELOG.rst
+++ b/doc/CHANGELOG.rst
@@ -11,6 +11,7 @@ Next version
 
   * Update hdf5 to v1.14.3 from v1.10.4 (#931 #933)
   * Ensure implicit complement handle is placed at the back of DAGMC volume indices (#935)
+  * Update MOAB to 5.5.1 from 5.3.0 (#939)
 
 v3.2.3
 ====================