diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b9c7de9..1ba71de 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,7 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             tmp
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-${{ matrix.ruby }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
diff --git a/Gemfile.lock b/Gemfile.lock
index 84a06d3..4c9dab9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    tiktoken_ruby (0.0.14.1)
+    tiktoken_ruby (0.0.15)
       rb_sys (~> 0.9)
 
 GEM
diff --git a/lib/tiktoken_ruby/version.rb b/lib/tiktoken_ruby/version.rb
index d0d097d..d89f6e4 100644
--- a/lib/tiktoken_ruby/version.rb
+++ b/lib/tiktoken_ruby/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Tiktoken
-  VERSION = "0.0.14.1"
+  VERSION = "0.0.15"
 end