diff --git a/hardening_manifest.yaml b/hardening_manifest.yaml
index 7c3f067b3590fbae66d8429456cc371cf679753f..7cdf25c334f45791b2c3b09ebe74c139d63b9a62 100644
--- a/hardening_manifest.yaml
+++ b/hardening_manifest.yaml
@@ -337,11 +337,11 @@ resources:
   validation:
     type: sha256
     value: 29b79607483861a48b2682e1f721a0155ef175bcc11cef8dd500b6a85f2a8fae
-- filename: stringi_1.7.3.tar.gz
-  url: http://cran.r-project.org/src/contrib/stringi_1.7.3.tar.gz
+- filename: stringi_1.7.4.tar.gz
+  url: https://cran.r-project.org/src/contrib/stringi_1.7.4.tar.gz
   validation:
     type: sha256
-    value: d98632f1d7dc22e0a190315ee3c435146894e18ef586adbeb80ad526673b1f56
+    value: 623b4ea181801450884ccca142711dcede3d14b5cf6fbdd41fa7302d8221aad5
 - filename: mlapi_0.1.0.tar.gz
   url: http://cran.r-project.org/src/contrib/mlapi_0.1.0.tar.gz
   validation: