diff --git a/.changelog/4171.txt b/.changelog/4171.txt
new file mode 100644
index 0000000000..d1314eaec9
--- /dev/null
+++ b/.changelog/4171.txt
@@ -0,0 +1,3 @@
+```release-note:enhancement
+functions: added 4096 as a valid value for available_memory_mb field of `google_cloudfunction_function`
+```
diff --git a/google-beta/resource_cloudfunctions_function.go b/google-beta/resource_cloudfunctions_function.go
index b0881faf39..baf0d9523e 100644
--- a/google-beta/resource_cloudfunctions_function.go
+++ b/google-beta/resource_cloudfunctions_function.go
@@ -21,6 +21,7 @@ var functionAllowedMemory = map[int]bool{
 	512:  true,
 	1024: true,
 	2048: true,
+	4096: true,
 }
 
 var allowedIngressSettings = []string{
diff --git a/website/docs/r/cloudfunctions_function.html.markdown b/website/docs/r/cloudfunctions_function.html.markdown
index 18f3b85098..99821a492c 100644
--- a/website/docs/r/cloudfunctions_function.html.markdown
+++ b/website/docs/r/cloudfunctions_function.html.markdown
@@ -113,7 +113,7 @@ Eg. `"nodejs8"`, `"nodejs10"`, `"python37"`, `"go111"`, `"go113"`.
 
 * `description` - (Optional) Description of the function.
 
-* `available_memory_mb` - (Optional) Memory (in MB), available to the function. Default value is 256MB. Allowed values are: 128MB, 256MB, 512MB, 1024MB, and 2048MB.
+* `available_memory_mb` - (Optional) Memory (in MB), available to the function. Default value is 256MB. Allowed values are: 128MB, 256MB, 512MB, 1024MB, 2048MB and 4096MB.
 
 * `timeout` - (Optional) Timeout (in seconds) for the function. Default value is 60 seconds. Cannot be more than 540 seconds.