diff --git a/examples/slf4j/build.gradle b/examples/slf4j/build.gradle
index 5f66956..cbb70a6 100644
--- a/examples/slf4j/build.gradle
+++ b/examples/slf4j/build.gradle
@@ -23,7 +23,7 @@ dependencies {
     implementation 'org.slf4j:slf4j-api'
 
     testImplementation platform(project(':dependencies'))
-    testImplementation platform('org.apache.groovy:groovy-bom:4.0.19')
+    testImplementation platform('org.apache.groovy:groovy-bom:4.0.20')
     testImplementation platform('org.spockframework:spock-bom:2.3-groovy-4.0')
     testImplementation project(':spock-outputcapture')
     testImplementation 'org.slf4j:slf4j-simple'
@@ -72,7 +72,7 @@ dependencies {
     spock22groovy30Implementation 'org.spockframework:spock-core'
 
     spock22groovy40Implementation platform(project(':dependencies'))
-    spock22groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.19')
+    spock22groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.20')
     spock22groovy40Implementation platform('org.spockframework:spock-bom:2.2-groovy-4.0')
     spock22groovy40Implementation project(':spock-outputcapture')
     spock22groovy40Implementation 'org.slf4j:slf4j-simple'
@@ -93,7 +93,7 @@ dependencies {
     spock23groovy30Implementation 'org.spockframework:spock-core'
 
     spock23groovy40Implementation platform(project(':dependencies'))
-    spock23groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.19')
+    spock23groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.20')
     spock23groovy40Implementation platform('org.spockframework:spock-bom:2.3-groovy-4.0')
     spock23groovy40Implementation project(':spock-outputcapture')
     spock23groovy40Implementation 'org.slf4j:slf4j-simple'
@@ -114,7 +114,7 @@ dependencies {
     spock24groovy30Implementation 'org.spockframework:spock-core'
 
     spock24groovy40Implementation platform(project(':dependencies'))
-    spock24groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.19')
+    spock24groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.20')
     spock24groovy40Implementation platform('org.spockframework:spock-bom:2.4-M2-groovy-4.0')
     spock24groovy40Implementation project(':spock-outputcapture')
     spock24groovy40Implementation 'org.slf4j:slf4j-simple'
diff --git a/examples/springboot/build.gradle b/examples/springboot/build.gradle
index 2eddd47..0424831 100644
--- a/examples/springboot/build.gradle
+++ b/examples/springboot/build.gradle
@@ -85,7 +85,7 @@ dependencies {
     spock22groovy30Implementation 'org.springframework.boot:spring-boot-starter-test'
 
     spock22groovy40Implementation platform('org.springframework.boot:spring-boot-dependencies:2.7.1')
-    spock22groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.19')
+    spock22groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.20')
     spock22groovy40Implementation platform('org.spockframework:spock-bom:2.2-groovy-4.0')
     spock22groovy40Implementation project(':spock-outputcapture')
     spock22groovy40Implementation 'org.spockframework:spock-spring'
@@ -108,7 +108,7 @@ dependencies {
     spock23groovy30Implementation 'org.springframework.boot:spring-boot-starter-test'
 
     spock23groovy40Implementation platform('org.springframework.boot:spring-boot-dependencies:2.7.1')
-    spock23groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.19')
+    spock23groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.20')
     spock23groovy40Implementation platform('org.spockframework:spock-bom:2.3-groovy-4.0')
     spock23groovy40Implementation project(':spock-outputcapture')
     spock23groovy40Implementation 'org.spockframework:spock-spring'
@@ -131,7 +131,7 @@ dependencies {
     spock24groovy30Implementation 'org.springframework.boot:spring-boot-starter-test'
 
     spock24groovy40Implementation platform('org.springframework.boot:spring-boot-dependencies:3.2.3')
-    spock24groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.19')
+    spock24groovy40Implementation platform('org.apache.groovy:groovy-bom:4.0.20')
     spock24groovy40Implementation platform('org.spockframework:spock-bom:2.4-M2-groovy-4.0')
     spock24groovy40Implementation project(':spock-outputcapture')
     spock24groovy40Implementation 'org.spockframework:spock-spring'
diff --git a/spock-outputcapture/build.gradle b/spock-outputcapture/build.gradle
index c54c8ea..1964679 100644
--- a/spock-outputcapture/build.gradle
+++ b/spock-outputcapture/build.gradle
@@ -8,7 +8,7 @@ dependencies {
     annotationProcessor 'org.projectlombok:lombok'
 
     compileOnly platform(project(':dependencies'))
-    compileOnly platform('org.apache.groovy:groovy-bom:4.0.19')
+    compileOnly platform('org.apache.groovy:groovy-bom:4.0.20')
     compileOnly platform('org.spockframework:spock-bom:2.3-groovy-4.0')
     compileOnly 'org.projectlombok:lombok'