diff --git a/.github/actions/install/action.yml b/.github/actions/install/action.yml
index d752a0b49..2c393821c 100644
--- a/.github/actions/install/action.yml
+++ b/.github/actions/install/action.yml
@@ -13,7 +13,7 @@ inputs:
   zig-v8:
     description: 'zig v8 version to install'
     required: false
-    default: 'v0.4.9'
+    default: 'v0.5.0'
   v8:
     description: 'v8 version to install'
     required: false
diff --git a/.github/actions/v8-snapshot/action.yml b/.github/actions/v8-snapshot/action.yml
index 7e3365f83..cbb998f1c 100644
--- a/.github/actions/v8-snapshot/action.yml
+++ b/.github/actions/v8-snapshot/action.yml
@@ -13,7 +13,7 @@ inputs:
   zig-v8:
     description: 'zig-v8 release tag the prebuilt lib came from'
     required: false
-    default: 'v0.4.9'
+    default: 'v0.5.0'
 
 runs:
   using: "composite"
diff --git a/Dockerfile b/Dockerfile
index 889c2a78d..cef60fd8d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ FROM debian:stable-slim
 ARG MINISIG=0.12
 ARG ZIG_MINISIG=RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U
 ARG V8=14.9.207.35
-ARG ZIG_V8=v0.4.9
+ARG ZIG_V8=v0.5.0
 ARG TARGETPLATFORM
 
 RUN apt-get update -yq && \