diff --git a/common/gradle.lockfile b/common/gradle.lockfile
index 54dc0c03..2f8393b7 100644
--- a/common/gradle.lockfile
+++ b/common/gradle.lockfile
@@ -100,4 +100,4 @@ org.spockframework:spock-core:2.4-M6-groovy-3.0=testCompileClasspath,testRuntime
 org.xmlresolver:xmlresolver:5.2.2=checkstyle
 org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
 org.yaml:snakeyaml:2.4=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins
diff --git a/context/gradle.lockfile b/context/gradle.lockfile
index 9c9e349a..acf082fe 100644
--- a/context/gradle.lockfile
+++ b/context/gradle.lockfile
@@ -111,4 +111,4 @@ org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
 org.yaml:snakeyaml:2.4=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
 uk.org.webcompere:system-stubs-core:2.1.5=testCompileClasspath,testRuntimeClasspath
 uk.org.webcompere:system-stubs-jupiter:2.1.5=testCompileClasspath,testRuntimeClasspath
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins
diff --git a/gateway-generator/gradle.lockfile b/gateway-generator/gradle.lockfile
index 40b15a8b..860377d3 100644
--- a/gateway-generator/gradle.lockfile
+++ b/gateway-generator/gradle.lockfile
@@ -131,4 +131,4 @@ org.spockframework:spock-core:2.4-M6-groovy-3.0=testCompileClasspath,testRuntime
 org.xmlresolver:xmlresolver:5.2.2=checkstyle
 org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
 org.yaml:snakeyaml:2.4=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins
diff --git a/gateway/gradle.lockfile b/gateway/gradle.lockfile
index 03a6de2e..6ce195dd 100644
--- a/gateway/gradle.lockfile
+++ b/gateway/gradle.lockfile
@@ -126,4 +126,4 @@ org.spockframework:spock-core:2.4-M6-groovy-3.0=testCompileClasspath,testRuntime
 org.xmlresolver:xmlresolver:5.2.2=checkstyle
 org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
 org.yaml:snakeyaml:2.4=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins
diff --git a/http/gradle.lockfile b/http/gradle.lockfile
index ed963b36..cf2c9876 100644
--- a/http/gradle.lockfile
+++ b/http/gradle.lockfile
@@ -127,4 +127,4 @@ org.spockframework:spock-core:2.4-M6-groovy-3.0=testCompileClasspath,testRuntime
 org.xmlresolver:xmlresolver:5.2.2=checkstyle
 org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
 org.yaml:snakeyaml:2.4=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins
diff --git a/messaging/gradle.lockfile b/messaging/gradle.lockfile
index d506555f..7882b293 100644
--- a/messaging/gradle.lockfile
+++ b/messaging/gradle.lockfile
@@ -111,4 +111,4 @@ org.spockframework:spock-core:2.4-M6-groovy-3.0=testCompileClasspath,testRuntime
 org.xmlresolver:xmlresolver:5.2.2=checkstyle
 org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
 org.yaml:snakeyaml:2.4=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins
diff --git a/testing/gradle.lockfile b/testing/gradle.lockfile
index 9db1307f..ef58ad36 100644
--- a/testing/gradle.lockfile
+++ b/testing/gradle.lockfile
@@ -125,4 +125,4 @@ org.spockframework:spock-core:2.4-M6-groovy-3.0=compileClasspath,runtimeClasspat
 org.xmlresolver:xmlresolver:5.2.2=checkstyle
 org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
 org.yaml:snakeyaml:2.4=compileClasspath,runtimeClasspath,testCompileClasspath,testRuntimeClasspath
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins
diff --git a/utilities/gradle.lockfile b/utilities/gradle.lockfile
index adcff32b..a3df75e7 100644
--- a/utilities/gradle.lockfile
+++ b/utilities/gradle.lockfile
@@ -95,4 +95,4 @@ org.spockframework:spock-bom:2.4-M6-groovy-3.0=testCompileClasspath,testRuntimeC
 org.spockframework:spock-core:2.4-M6-groovy-3.0=testCompileClasspath,testRuntimeClasspath
 org.xmlresolver:xmlresolver:5.2.2=checkstyle
 org.xmlresolver:xmlresolver:5.3.3=pmd,spotbugs
-empty=signatures,spotbugsPlugins
+empty=spotbugsPlugins