diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..24ba9a3
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.7.0
diff --git a/Data/operators.csv b/Data/operators.csv
index f0156d2..e3f6b74 100644
--- a/Data/operators.csv
+++ b/Data/operators.csv
@@ -68,3 +68,4 @@ toArray(),collect(),
 window,collect(Publishers.TimeGroupingStrategy),Combine has a TimeGroupingStrategy.byTimeOrCount that could be used as a window.
 withLatestFrom,❌,
 zip,zip,
+❌,measureInterval,
diff --git a/README.md b/README.md
index 1ac878f..b7f926f 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,7 @@ It's based on the following blog post: [https://medium.com/gett-engineering/rxsw
 | window                | collect(Publishers.TimeGroupingStrategy) | Combine has a TimeGroupingStrategy.byTimeOrCount that could be used as a window.                         |
 | withLatestFrom        | ❌                                        |                                                                                                          |
 | zip                   | zip                                      |                                                                                                          |
+| ❌                     | measureInterval                          |                                                                                                          |
 
 
 # Contributing
diff --git a/Resources/operators.jpg b/Resources/operators.jpg
index 16eca81..bb96f97 100644
Binary files a/Resources/operators.jpg and b/Resources/operators.jpg differ