diff --git a/.github/workflows/coverage-prs-all-components.yml b/.github/workflows/coverage-prs-all-components.yml
index cbc9ff2..76efe65 100644
--- a/.github/workflows/coverage-prs-all-components.yml
+++ b/.github/workflows/coverage-prs-all-components.yml
@@ -6,13 +6,13 @@ name: Coverage PRs - ALL components
 
 on:
   # NOTE: don't activate this by default because it could conflict with the other job ('only changed components')
-  # pull_request:
-  #   branches:
-  #     - master
-  #   paths:
-  #     - 'calculator-1/src/**'
-  #     - 'calculator-2/src/**'
-  #     - 'calculator-3/src/**'
+  pull_request:
+    branches:
+      - master
+    paths:
+      - 'calculator-1/src/**'
+      - 'calculator-2/src/**'
+      - 'calculator-3/src/**'
 
 
 jobs:
diff --git a/.github/workflows/coverage-prs-only-changed-components.yml b/.github/workflows/coverage-prs-only-changed-components.yml
index 7d558d4..f5bca30 100644
--- a/.github/workflows/coverage-prs-only-changed-components.yml
+++ b/.github/workflows/coverage-prs-only-changed-components.yml
@@ -1,13 +1,14 @@
 name: Coverage PRs - only changed components
 
 on:
-  pull_request:
-    branches:
-      - master
-    paths:
-      - 'calculator-1/src/**'
-      - 'calculator-2/src/**'
-      - 'calculator-3/src/**'
+  # NOTE: disabled only in this branch/PR to be able to exercise the "ALL components" workflow.
+  # pull_request:
+  #   branches:
+  #     - master
+  #   paths:
+  #     - 'calculator-1/src/**'
+  #     - 'calculator-2/src/**'
+  #     - 'calculator-3/src/**'
 
 
 jobs:
diff --git a/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java b/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java
index 0ff2fbe..35f2ce3 100644
--- a/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java
+++ b/calculator-1/src/main/java/com/codescene/calculator1/Calculator.java
@@ -15,6 +15,9 @@ public double calculate(double firstOperand, double secondOperand, char operator
             case ':':{
                 return divide(firstOperand,secondOperand);
             }
+            case '^':{
+                return square(firstOperand);
+            }
             default:
                 throw new IllegalArgumentException("Unsupported operation :"+operator);
         }
@@ -37,4 +40,7 @@ private double subtract(double firstOperand, double secondOperand) {
     private double add(double firstOperand, double secondOperand) {
         return firstOperand + secondOperand;
     }
+    private double square(double x) {
+        return x * x;
+    }
 }
diff --git a/calculator-1/src/test/java/com/codescene/calculator1/CalculatorTest.java b/calculator-1/src/test/java/com/codescene/calculator1/CalculatorTest.java
index 66c413a..258ab32 100644
--- a/calculator-1/src/test/java/com/codescene/calculator1/CalculatorTest.java
+++ b/calculator-1/src/test/java/com/codescene/calculator1/CalculatorTest.java
@@ -30,4 +30,11 @@ void divideSimple(){
         double result = calculator.calculate(1,1,':');
         Assertions.assertEquals(1,result);
     }
+
+    @Test
+    void squareSimple(){
+        // the signature isn't flexible so we repeat the same number twice
+        double result = calculator.calculate(10, 10, '^');
+        Assertions.assertEquals(100.0,result);
+    }
 }