diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index c2e85b2..5cde165 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -5,10 +5,3 @@ updates:
   schedule:
     interval: daily
   open-pull-requests-limit: 10
-  ignore:
-  - dependency-name: rand
-    versions:
-    - ">= 0.8.a, < 0.9"
-  - dependency-name: tokio
-    versions:
-    - ">= 0.3.a, < 0.4"
diff --git a/Cargo.toml b/Cargo.toml
index 18db298..3aef850 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,9 +20,9 @@ homepage = "https://ecies.org/rs/"
 repository = "https://github.com/ecies/rs"
 
 [dependencies]
-hkdf = "0.11.0"
+hkdf = "0.12.2"
 libsecp256k1 = "0.7.0"
-sha2 = "0.9.8"
+sha2 = "0.10.1"
 
 # openssl aes
 openssl = {version = "0.10.38", optional = true}