diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index c2c47a9e..fa118661 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -23,7 +23,9 @@ on:
 jobs:
   test-go:
     name: Lint & test Go code
-    runs-on: ubuntu-latest
+    runs-on: [ self-hosted, Linux ]
+    container:
+      image: golang:1.19
 
     steps:
       - name: Dump github context
@@ -39,10 +41,6 @@ jobs:
       - name: Dump github ref
         run: echo "$GITHUB_REF"
 
-      - uses: actions/setup-go@v3
-        with:
-          go-version: 1.19.5
-
       - uses: actions/checkout@v3
         with:
           ref: refs/pull/${{ github.event.number }}/merge
@@ -59,7 +57,9 @@ jobs:
 
   test-py:
     name: Lint & test Python code
-    runs-on: ubuntu-latest
+    runs-on: [ self-hosted, Linux ]
+    container:
+      image: python:3.9.18
 
     steps:
       - name: Dump github context
@@ -76,11 +76,8 @@ jobs:
         run: echo "$GITHUB_REF"
 
       - uses: actions/checkout@v3
-
-      - name: Set up python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          ref: refs/pull/${{ github.event.number }}/merge
 
       - name: Install dependencies
         run: make python-deps
diff --git a/.github/workflows/push.yaml b/.github/workflows/push.yaml
index e90ec1a3..13984a48 100644
--- a/.github/workflows/push.yaml
+++ b/.github/workflows/push.yaml
@@ -23,7 +23,9 @@ on:
 jobs:
   test-go:
     name: Lint & test Go code
-    runs-on: ubuntu-latest
+    runs-on: [ self-hosted, Linux ]
+    container:
+      image: golang:1.19
 
     steps:
       - name: Dump github context
@@ -39,10 +41,6 @@ jobs:
       - name: Dump github ref
         run: echo "$GITHUB_REF"
 
-      - uses: actions/setup-go@v3
-        with:
-          go-version: "^1.19.5"
-
       - uses: actions/checkout@v3
 
       # This gets killed, probably due to memory usage
@@ -58,7 +56,10 @@ jobs:
 
   test-py:
     name: Lint & test Python code
-    runs-on: ubuntu-latest
+    runs-on: [ self-hosted, Linux ]
+    container:
+      image: python:3.9.18
+
     env:
       V3IO_API: ${{ secrets.V3IO_API }}
       V3IO_ACCESS_KEY: ${{ secrets.V3IO_ACCESS_KEY }}
@@ -80,11 +81,6 @@ jobs:
 
       - uses: actions/checkout@v3
 
-      - name: Set up python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.7
-
       - name: Install dependencies
         run: make python-deps
 
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index bfa2111b..6aaf26bc 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -22,7 +22,9 @@ on:
 jobs:
   test-go:
     name: Lint & test Go code
-    runs-on: ubuntu-latest
+    runs-on: [ self-hosted, Linux ]
+    container:
+      image: golang:1.19
 
     steps:
       - name: Dump github context
@@ -38,10 +40,6 @@ jobs:
       - name: Dump github ref
         run: echo "$GITHUB_REF"
 
-      - uses: actions/setup-go@v3
-        with:
-          go-version: "^1.19.5"
-
       - uses: actions/checkout@v3
 
       # This gets killed, probably due to memory usage
@@ -57,7 +55,10 @@ jobs:
 
   test-py:
     name: Lint & test Python code
-    runs-on: ubuntu-latest
+    runs-on: [ self-hosted, Linux ]
+    container:
+      image: python:3.9.18
+
     env:
       V3IO_API: ${{ secrets.V3IO_API }}
       V3IO_ACCESS_KEY: ${{ secrets.V3IO_ACCESS_KEY }}
@@ -79,11 +80,6 @@ jobs:
 
       - uses: actions/checkout@v3
 
-      - name: Set up python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: 3.7
-
       - name: Install dependencies
         run: make python-deps