diff --git a/.github/workflows/python_ci.yaml b/.github/workflows/python_ci.yaml
index 35191fdd..6e59bbf9 100644
--- a/.github/workflows/python_ci.yaml
+++ b/.github/workflows/python_ci.yaml
@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: "3.8"
+          python-version: "3.7"
 
       - name: Pip install
         run: |
diff --git a/python/pyproject.toml b/python/pyproject.toml
index b1f0d2d2..cc23463a 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -2,11 +2,12 @@
 name = "sift_stack_py"
 version = "0.3.0-rc.1"
 description = "Python client library for the Sift API"
-requires-python = ">=3.8"
+requires-python = ">=3.7"
 readme = {file = "README.md", content-type = "text/markdown"}
 license = {file = "LICENSE"}
 classifiers  = [
     "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
@@ -21,20 +22,20 @@ keywords = [
   "sift_py",
 ]
 dependencies = [
-  "grpcio~=1.64",
+  "grpcio~=1.62",
   "npTDMS~=1.9",
   "PyYAML~=6.0",
-  "pandas~=2.0",
-  "protobuf~=5.26",
+  "pandas~=1.3",
+  "protobuf~=4.24",
   "pydantic~=2.0",
   "pydantic_core~=2.3",
   "requests~=2.25",
   "requests-toolbelt~=1.0",
 
   # May move these to optional dependencies in the future.
-  "pandas-stubs~=2.0",
+  "pandas-stubs~=1.4",
   "types-PyYAML~=6.0",
-  "types-protobuf~=5.26",
+  "types-protobuf~=4.24",
   "typing-extensions~=4.6",
   "types-requests~=2.25",
 ]
@@ -47,12 +48,12 @@ Changelog = "https://github.com/sift-stack/sift/tree/main/python/CHANGELOG.md"
 
 [project.optional-dependencies]
 development = [
-  "grpcio-testing==1.64.1",
-  "mypy==1.10.0",
-  "pytest==8.2.2",
-  "pytest-asyncio==0.23.7",
-  "pytest-benchmark==4.0.0",
-  "pytest-mock==3.14.0",
+  "grpcio-testing~=1.62",
+  "mypy~=1.4",
+  "pytest~=8.2",
+  "pytest-asyncio~=0.23",
+  "pytest-benchmark~=4.0",
+  "pytest-mock~=3.14",
   "ruff",
 ]
 build = [
@@ -99,7 +100,7 @@ sift_py = ["py.typed"]
 [tool.ruff]
 line-length = 100
 indent-width = 4
-target-version = "py38" # Python 3.8
+target-version = "py37" # Python 3.7
 exclude = [
     ".bzr",
     ".direnv",