diff --git a/blur/cog.yaml b/blur/cog.yaml
index 38de2f9..30fc435 100644
--- a/blur/cog.yaml
+++ b/blur/cog.yaml
@@ -1,5 +1,5 @@
 build:
-  python_version: "3.8"
+  python_version: "3.12"
   python_packages:
     - "pillow==8.2.0"
   system_packages:
diff --git a/canary/cog.yaml b/canary/cog.yaml
index ce62284..defc03d 100644
--- a/canary/cog.yaml
+++ b/canary/cog.yaml
@@ -1,3 +1,3 @@
 build:
-  python_version: "3.8"
+  python_version: "3.12"
 predict: "predict.py:Predictor"
diff --git a/hello-image/cog.yaml b/hello-image/cog.yaml
index 7b6d5d4..defc03d 100644
--- a/hello-image/cog.yaml
+++ b/hello-image/cog.yaml
@@ -1,3 +1,3 @@
 build:
-  python_version: "3.11"
+  python_version: "3.12"
 predict: "predict.py:Predictor"
diff --git a/hello-train/cog.yaml b/hello-train/cog.yaml
index c2d912c..cc4bee3 100644
--- a/hello-train/cog.yaml
+++ b/hello-train/cog.yaml
@@ -1,4 +1,4 @@
 build:
-  python_version: "3.8"
+  python_version: "3.12"
 predict: "predict.py:Predictor"
 train: "train.py:train"
diff --git a/hello-world/cog.yaml b/hello-world/cog.yaml
index ce62284..defc03d 100644
--- a/hello-world/cog.yaml
+++ b/hello-world/cog.yaml
@@ -1,3 +1,3 @@
 build:
-  python_version: "3.8"
+  python_version: "3.12"
 predict: "predict.py:Predictor"
diff --git a/notebook/cog.yaml b/notebook/cog.yaml
index bb9ab21..053c8d7 100644
--- a/notebook/cog.yaml
+++ b/notebook/cog.yaml
@@ -2,6 +2,6 @@ build:
   gpu: false
   python_packages:
     - "jupyterlab==3.2.4"
-  python_version: "3.9"
+  python_version: "3.12"
 
 predict: "predict.py:Predictor"
diff --git a/resnet/cog.yaml b/resnet/cog.yaml
index 04f48a1..d38a992 100644
--- a/resnet/cog.yaml
+++ b/resnet/cog.yaml
@@ -1,5 +1,5 @@
 build:
-  python_version: "3.8"
+  python_version: "3.12"
   python_packages:
     - "pillow==9.1.0"
     - "tensorflow==2.8.0"