diff --git a/.github/workflows/halmos.yml b/.github/workflows/halmos.yml
index 68fc4078..e5ba8a1d 100644
--- a/.github/workflows/halmos.yml
+++ b/.github/workflows/halmos.yml
@@ -36,7 +36,7 @@ jobs:
           architecture: ${{ matrix.architecture }}
 
       - name: Install Vyper
-        run: pip install vyper
+        run: pip install git+https://github.com/vyperlang/vyper@master
 
       - name: Show the Vyper version
         run: vyper --version
diff --git a/.github/workflows/test-contracts.yml b/.github/workflows/test-contracts.yml
index 1e245fec..40164d1d 100644
--- a/.github/workflows/test-contracts.yml
+++ b/.github/workflows/test-contracts.yml
@@ -43,7 +43,7 @@ jobs:
         run: ape compile
 
       - name: Remove Ape Vyper and install latest Vyper
-        run: pip install --force-reinstall vyper
+        run: pip install --force-reinstall git+https://github.com/vyperlang/vyper@master
 
       - name: Show the Vyper version
         run: vyper --version
diff --git a/.github/workflows/venom-halmos.yml b/.github/workflows/venom-halmos.yml
index f5af520b..bf54da15 100644
--- a/.github/workflows/venom-halmos.yml
+++ b/.github/workflows/venom-halmos.yml
@@ -41,7 +41,7 @@ jobs:
         run: python scripts/insert_venom_pragma.py
 
       - name: Install Vyper
-        run: pip install vyper
+        run: pip install git+https://github.com/vyperlang/vyper@master
 
       - name: Show the Vyper version
         run: vyper --version
diff --git a/.github/workflows/venom-test-contracts.yml b/.github/workflows/venom-test-contracts.yml
index fe5981f6..7fd79221 100644
--- a/.github/workflows/venom-test-contracts.yml
+++ b/.github/workflows/venom-test-contracts.yml
@@ -38,7 +38,7 @@ jobs:
         run: python scripts/insert_venom_pragma.py
 
       - name: Install Vyper
-        run: pip install vyper
+        run: pip install git+https://github.com/vyperlang/vyper@master
 
       - name: Install pnpm
         uses: pnpm/action-setup@v3