diff --git a/Cargo.toml b/Cargo.toml
index 906fb16f0..603bf2e13 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -52,6 +52,7 @@ usdt = "0.6.0"
 wtf8 = "0.1"
 xsum = "0.1.6"
 temporal_rs = "0.2.0"
+icu_calendar = "=2.1.1"
 
 [workspace.metadata.dylint]
 libraries = [{ path = "nova_lint" }]
diff --git a/README.md b/README.md
index 4bdff1904..bbedf3b97 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,16 @@ but the slightly modified slides are.
 TC39 slides:
 [Google Drive](https://docs.google.com/presentation/d/1Pv6Yn2sUWFIvlLwX9ViCjuyflsVdpEPQBbVlLJnFubM/edit?usp=drive_link)
 
+## Funding
+
+This project received funding through [NGI Zero Core](https://nlnet.nl/core), a
+fund established by [NLnet](https://nlnet.nl) with financial support from the
+European Commission's [Next Generation Internet](https://ngi.eu) program. Learn
+more at the [NLnet project page](https://nlnet.nl/project/Nova).
+
+[<img src="https://nlnet.nl/logo/banner.png" alt="NLnet foundation logo" width="20%" />](https://nlnet.nl)
+[<img src="https://nlnet.nl/image/logos/NGI0_tag.svg" alt="NGI Zero Logo" width="20%" />](https://nlnet.nl/core)
+
 ## [Contributing]
 
 So you wish to contribute, eh? You're very welcome to do so! Please take a look
diff --git a/nova_vm/Cargo.toml b/nova_vm/Cargo.toml
index 8c2d12f00..36be2caac 100644
--- a/nova_vm/Cargo.toml
+++ b/nova_vm/Cargo.toml
@@ -40,6 +40,7 @@ usdt = { workspace = true }
 wtf8 = { workspace = true }
 xsum = { workspace = true }
 temporal_rs = { workspace = true, optional = true }
+icu_calendar = { workspace = true, optional = true }
 
 [features]
 default = [