diff --git a/core-services/prow/02_config/_boskos.yaml b/core-services/prow/02_config/_boskos.yaml
index 962d5863e623a..ac3aa2c9dc43f 100644
--- a/core-services/prow/02_config/_boskos.yaml
+++ b/core-services/prow/02_config/_boskos.yaml
@@ -322,16 +322,6 @@ resources:
   - us-east1--67
   - us-east1--68
   - us-east1--69
-  - us-east1--70
-  - us-east1--71
-  - us-east1--72
-  - us-east1--73
-  - us-east1--74
-  - us-east1--75
-  - us-east1--76
-  - us-east1--77
-  - us-east1--78
-  - us-east1--79
   state: free
   type: gcp-quota-slice
 - names:
diff --git a/core-services/prow/02_config/generate-boskos.py b/core-services/prow/02_config/generate-boskos.py
index 131a5716953ae..2531cc9f607bb 100755
--- a/core-services/prow/02_config/generate-boskos.py
+++ b/core-services/prow/02_config/generate-boskos.py
@@ -18,7 +18,7 @@
         'westus': 10
     },
     'gcp-quota-slice': {
-        'us-east1': 80,
+        'us-east1': 70,
     },
     'libvirt-s390x-quota-slice': {},
     'libvirt-ppc64le-quota-slice': {},