diff --git a/.github/workflows/check-format.yml b/.github/workflows/check-format.yml
index c088c064a..160e8e000 100644
--- a/.github/workflows/check-format.yml
+++ b/.github/workflows/check-format.yml
@@ -16,7 +16,7 @@ jobs:
   check-code-format:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - name: Set up Python
       uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
       with:
diff --git a/.github/workflows/dependent-tests.yml b/.github/workflows/dependent-tests.yml
index c4e4a0052..732600ba2 100644
--- a/.github/workflows/dependent-tests.yml
+++ b/.github/workflows/dependent-tests.yml
@@ -21,7 +21,7 @@ jobs:
           - amazon-braket-pennylane-plugin-python
 
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
       with:
diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index 0fd1b03a2..a26168c11 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -12,7 +12,7 @@ jobs:
     name: Build and publish distribution to PyPi
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
       - name: Set up Python
         uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
         with:
diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index f773f151e..591ffed15 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -24,7 +24,7 @@ jobs:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
 
     steps:
-    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
       with:
diff --git a/.github/workflows/twine-check.yml b/.github/workflows/twine-check.yml
index 46be37a24..5a5966763 100644
--- a/.github/workflows/twine-check.yml
+++ b/.github/workflows/twine-check.yml
@@ -14,7 +14,7 @@ jobs:
     name: Check long description
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4.0.0
       - name: Set up Python
         uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
         with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a5350f189..e83803bab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## v1.55.0 (2023-09-09)
+
+### Features
+
+ * add Aria2 enum
+
 ## v1.54.3.post0 (2023-09-04)
 
 ### Documentation Changes
diff --git a/src/braket/_sdk/_version.py b/src/braket/_sdk/_version.py
index 78e34acdc..46367d959 100644
--- a/src/braket/_sdk/_version.py
+++ b/src/braket/_sdk/_version.py
@@ -15,4 +15,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "1.54.4.dev0"
+__version__ = "1.55.1.dev0"