diff --git a/src/data/streams/aware_postgresql/format.yaml b/src/data/streams/aware_postgresql/format.yaml
index cbd983a4..24bdff5f 100644
--- a/src/data/streams/aware_postgresql/format.yaml
+++ b/src/data/streams/aware_postgresql/format.yaml
@@ -72,7 +72,7 @@ PHONE_APPLICATIONS_FOREGROUND:
     MUTATION:
       COLUMN_MAPPINGS:
       SCRIPTS:
-        - src/data/streams/mutations/phone/straw/app_add_name.py
+        - src/data/streams/mutations/phone/straw/app_add_name.R
 
 PHONE_APPLICATIONS_NOTIFICATIONS:
   ANDROID:
@@ -86,7 +86,7 @@ PHONE_APPLICATIONS_NOTIFICATIONS:
     MUTATION:
       COLUMN_MAPPINGS:
       SCRIPTS:
-        - src/data/streams/mutations/phone/straw/app_add_name.py
+        - src/data/streams/mutations/phone/straw/app_add_name.R
 
 PHONE_BATTERY:
   ANDROID:
diff --git a/src/data/streams/mutations/phone/straw/app_add_name.R b/src/data/streams/mutations/phone/straw/app_add_name.R
new file mode 100644
index 00000000..c3222e80
--- /dev/null
+++ b/src/data/streams/mutations/phone/straw/app_add_name.R
@@ -0,0 +1,8 @@
+source("renv/activate.R") # needed to use RAPIDS renv environment
+library(dplyr)
+
+main <- function(data, stream_parameters){
+    data <- data %>%
+      mutate(application_name = "hashed")
+    return(data)
+}