diff --git a/.github/workflows/core-ganache-3.10.yaml b/.github/workflows/core-ganache-3.10.yaml
index b3d3368ce..adaa81cbf 100644
--- a/.github/workflows/core-ganache-3.10.yaml
+++ b/.github/workflows/core-ganache-3.10.yaml
@@ -1,4 +1,4 @@
-name: Core Ganache (py10)
+name: Core Ganache (py3.10)
 on: ["push", "pull_request"]
 
 env:
@@ -7,7 +7,7 @@ env:
   WEB3_INFURA_PROJECT_ID: ddddf0c53f254d36aa76ce4e3a6a390e
 
 jobs:
-  py37core:
+  py310core:
     runs-on: ubuntu-latest
 
     steps:
@@ -22,10 +22,10 @@ jobs:
           key: ${{ runner.os }}-compiler-cache
 
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
 
       - name: Install Ganache
-        run: npm install -g ganache@7.0.2
+        run: npm install -g ganache@7.9.2
 
       - name: Setup Python 3.10
         uses: actions/setup-python@v5
diff --git a/.github/workflows/core-ganache-3.8.yaml b/.github/workflows/core-ganache-3.8.yaml
index 970c93f62..158fac1fa 100644
--- a/.github/workflows/core-ganache-3.8.yaml
+++ b/.github/workflows/core-ganache-3.8.yaml
@@ -1,4 +1,4 @@
-name: Core Ganache (py38)
+name: Core Ganache (py3.12)
 on: ["push", "pull_request"]
 
 env:
@@ -7,11 +7,11 @@ env:
   WEB3_INFURA_PROJECT_ID: 21317ddb5ded42ce8d40c7d78f90474f
 
 jobs:
-  py38core:
+  py312core:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Cache Solidity Installations
         uses: actions/cache@v2
@@ -22,21 +22,21 @@ jobs:
           key: ${{ runner.os }}-compiler-cache
 
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
 
       - name: Install Ganache
-        run: npm install -g ganache@7.0.2
+        run: npm install -g ganache@7.9.2
 
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v2
+      - name: Setup Python 3.12
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: "3.12"
 
       - name: Install Tox
         run: pip install tox
 
       - name: Run Tox
-        run: tox -e py38
+        run: tox -e py312
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v1
diff --git a/.github/workflows/core-ganache-3.9.yaml b/.github/workflows/core-ganache-3.9.yaml
index 6156bbcda..bb8775fe5 100644
--- a/.github/workflows/core-ganache-3.9.yaml
+++ b/.github/workflows/core-ganache-3.9.yaml
@@ -1,4 +1,4 @@
-name: Core Ganache (py39)
+name: Core Ganache (py3.11)
 on: ["push", "pull_request"]
 
 env:
@@ -7,16 +7,11 @@ env:
   WEB3_INFURA_PROJECT_ID: 1668fecbc9c242d58253476103a42ce9
 
 jobs:
-  py39core:
-    runs-on: ${{ matrix.os }}
-
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [windows-latest, ubuntu-latest]
+  py311core:
+    runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Cache Solidity Installations
         uses: actions/cache@v2
@@ -27,21 +22,21 @@ jobs:
           key: ${{ runner.os }}-compiler-cache
 
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
 
       - name: Install Ganache
-        run: npm install -g ganache@7.0.2
+        run: npm install -g ganache@7.9.2
 
-      - name: Setup Python 3.9
-        uses: actions/setup-python@v2
+      - name: Setup Python 3.11
+        uses: actions/setup-python@v5
         with:
-          python-version: 3.9
+          python-version: "3.11"
 
       - name: Install Tox
         run: pip install tox
 
       - name: Run Tox
-        run: tox -e py39
+        run: tox -e py311
 
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v1
diff --git a/tox.ini b/tox.ini
index 52f940fa8..87e02547e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 envlist =
     lint
     docs-{local,external}
-    py{38,39,310}
+    py{310,311,312}
     {pm,evm,plugin}test
     evm-{byzantium,petersburg,istanbul,latest}
 
@@ -12,16 +12,16 @@ passenv =
     GITHUB_TOKEN
     WEB3_INFURA_PROJECT_ID
 deps =
-    py{38,39,310},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: coverage==5.2.1
-    py{38,39,310},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest==6.0.1
-    py{38,39,310},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest-cov==2.10.1
-    py{38,39,310},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest-mock==3.3.1
-    py{38,39,310},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest-xdist==1.34.0
+    py{310,311,312},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: coverage==5.2.1
+    py{310,311,312},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest==6.0.1
+    py{310,311,312},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest-cov==2.10.1
+    py{310,311,312},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest-mock==3.3.1
+    py{310,311,312},{pm,plugin}test,evm-{byzantium,petersburg,istanbul,latest}: pytest-xdist==1.34.0
     docs-{local,external}: sphinx
     docs-{local,external}: sphinx_rtd_theme
     docs-{local,external}: pygments_lexer_solidity
 commands =
-    py{38,39,310}: python -m pytest tests/ {posargs}
+    py{310,311,312}: python -m pytest tests/ {posargs}
     evm-byzantium: python -m pytest tests/ --evm 0.4.22,0.4.26,0.5.0,0.5.17,0.6.3,0.6.9 byzantium 0,10000
     evm-petersburg: python -m pytest tests/ --evm 0.5.5,0.5.17,0.6.3,0.6.9 petersburg 0,10000
     evm-istanbul: python -m pytest tests/ --evm 0.5.13,0.5.17,0.6.3,0.6.9 istanbul 0,10000