diff --git a/theodolite-benchmarks/definitions/uc1-beam-flink/resources/flink-configuration-configmap.yaml b/theodolite-benchmarks/definitions/uc1-beam-flink/resources/flink-configuration-configmap.yaml
index 625d8eb9aeebf5bb55f079ebe290460191965cec..2be5d49c1b588e4339d3ac19b0598a7b9a98db27 100644
--- a/theodolite-benchmarks/definitions/uc1-beam-flink/resources/flink-configuration-configmap.yaml
+++ b/theodolite-benchmarks/definitions/uc1-beam-flink/resources/flink-configuration-configmap.yaml
@@ -7,6 +7,7 @@ metadata:
 data:
   flink-conf.yaml: |+
     jobmanager.rpc.address: flink-jobmanager
+    taskmanager.numberOfTaskSlots: 1
     blob.server.port: 6124
     jobmanager.rpc.port: 6123
     taskmanager.rpc.port: 6122
diff --git a/theodolite-benchmarks/definitions/uc2-beam-flink/resources/flink-configuration-configmap.yaml b/theodolite-benchmarks/definitions/uc2-beam-flink/resources/flink-configuration-configmap.yaml
index 625d8eb9aeebf5bb55f079ebe290460191965cec..2be5d49c1b588e4339d3ac19b0598a7b9a98db27 100644
--- a/theodolite-benchmarks/definitions/uc2-beam-flink/resources/flink-configuration-configmap.yaml
+++ b/theodolite-benchmarks/definitions/uc2-beam-flink/resources/flink-configuration-configmap.yaml
@@ -7,6 +7,7 @@ metadata:
 data:
   flink-conf.yaml: |+
     jobmanager.rpc.address: flink-jobmanager
+    taskmanager.numberOfTaskSlots: 1
     blob.server.port: 6124
     jobmanager.rpc.port: 6123
     taskmanager.rpc.port: 6122
diff --git a/theodolite-benchmarks/definitions/uc3-beam-flink/resources/flink-configuration-configmap.yaml b/theodolite-benchmarks/definitions/uc3-beam-flink/resources/flink-configuration-configmap.yaml
index 625d8eb9aeebf5bb55f079ebe290460191965cec..2be5d49c1b588e4339d3ac19b0598a7b9a98db27 100644
--- a/theodolite-benchmarks/definitions/uc3-beam-flink/resources/flink-configuration-configmap.yaml
+++ b/theodolite-benchmarks/definitions/uc3-beam-flink/resources/flink-configuration-configmap.yaml
@@ -7,6 +7,7 @@ metadata:
 data:
   flink-conf.yaml: |+
     jobmanager.rpc.address: flink-jobmanager
+    taskmanager.numberOfTaskSlots: 1
     blob.server.port: 6124
     jobmanager.rpc.port: 6123
     taskmanager.rpc.port: 6122
diff --git a/theodolite-benchmarks/definitions/uc4-beam-flink/resources/flink-configuration-configmap.yaml b/theodolite-benchmarks/definitions/uc4-beam-flink/resources/flink-configuration-configmap.yaml
index 625d8eb9aeebf5bb55f079ebe290460191965cec..2be5d49c1b588e4339d3ac19b0598a7b9a98db27 100644
--- a/theodolite-benchmarks/definitions/uc4-beam-flink/resources/flink-configuration-configmap.yaml
+++ b/theodolite-benchmarks/definitions/uc4-beam-flink/resources/flink-configuration-configmap.yaml
@@ -7,6 +7,7 @@ metadata:
 data:
   flink-conf.yaml: |+
     jobmanager.rpc.address: flink-jobmanager
+    taskmanager.numberOfTaskSlots: 1
     blob.server.port: 6124
     jobmanager.rpc.port: 6123
     taskmanager.rpc.port: 6122