diff --git a/.circleci/config.yml b/.circleci/config.yml
index 46d49676..7fe94c4d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -86,6 +86,10 @@ jobs:
     executor:
       name: win/default
       shell: powershell.exe
+    environment:
+      OPENSSL_TAG: "openssl-3.0.3"
+      LIBEVENT_TAG: "release-2.1.12-stable"
+      TOR_TAG: "tor-0.4.7.7"
     steps:
       - checkout
       # # Install python
@@ -119,31 +123,80 @@ jobs:
             refreshenv
             C:\msys2\usr\bin\bash -c "/c/msys2/usr/bin/pacman -S --needed --noconfirm autoconf automake libtool make clang"
             mkdir C:\Users\circleci\src
+            mkdir C:\Users\circleci\build
+
+      # Build openssl
+      - restore_cache:
+          key: "build-win64-openssl-{{ .Environment.OPENSSL_TAG }}"
+      - run:
+          name: Build openssl
+          command: |
+            if (Test-Path -Path "C:\Users\circleci\build\openssl") {
+              Write-Output "openssl already compiled, skipping"
+            } else {
+              # Get source
+              gpg --recv-key 8657ABB260F056B1E5190839D9C4D26D0E604491
+              cd C:\Users\circleci\src
+              git clone https://github.com/openssl/openssl.git
+              cd openssl
+              git tag -v $OPENSSL_TAG
+              if($? -ne $true) { throw "openssl tag doesn't verify" }
+              git checkout $OPENSSL_TAG
+
+              # Build
+              $BuildScript = {
+                #!/bin/bash
+                export PATH=/c/msys2/usr/bin:$PATH
+                cd /c/Users/circleci/src/openssl
+                ./Configure --prefix=/opt/openssl-build --openssldir=/usr/local/ssl '-Wl,-rpath,$(LIBRPATH)' Cygwin-x86_64
+                make -j$(nproc)
+                make install
+                cp -r /opt/openssl-build /c/Users/circleci/build/openssl
+              }
+              Set-Content -Path C:\Users\circleci\src\build-openssl.sh -Value $BuildScript.ToString()
+              C:\msys2\usr\bin\bash -c "/c/Users/circleci/src/build-openssl.sh"
+            }
+      - save_cache:
+          key: "build-win64-openssl-{{ .Environment.OPENSSL_TAG }}"
+          paths:
+            - C:\Users\circleci\build\openssl
 
       # Build libevent
+      - restore_cache:
+          key: "build-win64-livevent-{{ .Environment.LIBEVENT_TAG }}"
       - run:
           name: Build libevent
           command: |
-            $LibeventTag = "release-2.1.12-stable"
+            if (Test-Path -Path "C:\Users\circleci\build\openssl") {
+              Write-Output "openssl already compiled, skipping"
+            } else {
+              # Get source
+              gpg --recv-key 9E3AC83A27974B84D1B3401DB86086848EF8686D
+              cd C:\Users\circleci\src
+              git clone https://github.com/libevent/libevent.git
+              cd libevent
+              git tag -v $LIBEVENT_TAG
+              if($? -ne $true) { throw "libevent tag doesn't verify" }
+              git checkout $LIBEVENT_TAG
 
-            # Get source
-            gpg --recv-key 9E3AC83A27974B84D1B3401DB86086848EF8686D
-            cd C:\Users\circleci\src
-            git clone https://github.com/libevent/libevent.git
-            cd libevent
-            git tag -v $LibeventTag
-            if($? -ne $true) { throw "libevent tag doesn't verify" }
-            git checkout $LibeventTag
-
-            # Build
-            $BashScript = @"
-            #!/bin/bash
-            export PATH=/c/msys2/usr/bin:$PATH
-            cd /c/Users/circleci/src/libevent
-            ./autogen.sh
-            ./configure --prefix=/opt/libevent-build --with-pic
-            make -j8 install
-            "@
+              # Build
+              $BuildScript = {
+                #!/bin/bash
+                export PATH=/c/msys2/usr/bin:$PATH
+                cd /c/Users/circleci/src/libevent
+                ./autogen.sh
+                ./configure --prefix=/opt/libevent-build --with-pic
+                make -j$(nproc)
+                make install
+                cp -r /opt/libevent-build /c/Users/circleci/build/libevent
+              }
+              Set-Content -Path C:\Users\circleci\src\build-libevent.sh -Value $BuildScript.ToString()
+              C:\msys2\usr\bin\bash -c "/c/Users/circleci/src/build-libevent.sh"
+            }
+      - save_cache:
+          key: "build-win64-libevent-{{ .Environment.LIBEVENT_TAG }}"
+          paths:
+            - C:\Users\circleci\build\libevent
 
       # # Build tor
       # - run: