diff --git a/.github/workflows/create-release.yaml b/.github/workflows/create-release.yaml
index 97998a5..71fbbbc 100644
--- a/.github/workflows/create-release.yaml
+++ b/.github/workflows/create-release.yaml
@@ -17,9 +17,9 @@ jobs:
         python-version: [ 3.11 ]
         node-version: [ 18.16.0 ]
 
-        ganache-version: [ 7.8.0 ]
+        ganache-version: [ 7.9.1 ]
 
-        solc-version: [ v0.8.20 ]
+        solc-version: [ v0.8.21 ]
 
     env:
       SOLC_BIN: ${{ github.workspace }}/build/solc-static-linux
diff --git a/.github/workflows/pubsub-solidity-unittesting.yaml b/.github/workflows/pubsub-solidity-unittesting.yaml
index 80c3e12..af9321f 100644
--- a/.github/workflows/pubsub-solidity-unittesting.yaml
+++ b/.github/workflows/pubsub-solidity-unittesting.yaml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-22.04 ]
-        solc-version: [ 0.8.20 ]
+        solc-version: [ 0.8.21 ]
         chain-fork: [ shanghai ]
         opt-runs: [ 200 ]
 
diff --git a/Makefile b/Makefile
index c3945f4..75a23aa 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 MODULES        := \
 	PubSub \
 	tests
-SOLC_VERSION   := v0.8.20
+SOLC_VERSION   := v0.8.21
 MKFILE_PATH    := $(abspath $(lastword $(MAKEFILE_LIST)))
 CURRENT_DIR    := $(dir $(MKFILE_PATH))
 SOLC_BIN       := $(CURRENT_DIR)/build/solc-static-linux