diff --git a/.github/workflows/build-graal.yml b/.github/workflows/build-graal.yml
index 53ab871..47de403 100644
--- a/.github/workflows/build-graal.yml
+++ b/.github/workflows/build-graal.yml
@@ -10,8 +10,8 @@ on:
       - main
 
 env:
-  GH_SBT_OPTS: "-Xss64m -Xms4G -XX:MaxMetaspaceSize=1G -Xmx6G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions"
-  GH_JVM_OPTS: "-Xss64m -Xms4G -XX:MaxMetaspaceSize=1G -Xmx6G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions -XX:+UseJVMCICompiler"
+  GH_SBT_OPTS: "-Xss64m -Xms2G -XX:MaxMetaspaceSize=1G -Xmx4G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions"
+  GH_JVM_OPTS: "-Xss64m -Xms2G -XX:MaxMetaspaceSize=1G -Xmx4G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions -XX:+UseJVMCICompiler"
   CLI_SCALA_VERSION: "3.3.0"
   CLI_SCALA_BINARY_VERSION: "3"
   GRAALVM_JAVA_VERSION: "17"
@@ -71,7 +71,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-latest]
+        os: [windows-2019]
         run-binary: [whatsub-cli]
     steps:
       - name: Configure git
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 473b26d..dda8853 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -7,8 +7,8 @@ on:
 
 env:
   GH_JAVA_VERSION: "17"
-  GH_SBT_OPTS: "-Xss64m -Xms4G -XX:MaxMetaspaceSize=1G -Xmx6G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions"
-  GH_JVM_OPTS: "-Xss64m -Xms4G -XX:MaxMetaspaceSize=1G -Xmx6G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions -XX:+UseJVMCICompiler"
+  GH_SBT_OPTS: "-Xss64m -Xms2G -XX:MaxMetaspaceSize=1G -Xmx4G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions"
+  GH_JVM_OPTS: "-Xss64m -Xms2G -XX:MaxMetaspaceSize=1G -Xmx4G -XX:MaxInlineLevel=18 -XX:+UnlockExperimentalVMOptions -XX:+UseJVMCICompiler"
   CLI_SCALA_VERSION: "3.3.0"
   CLI_SCALA_BINARY_VERSION: "3"
   GRAALVM_JAVA_VERSION: "17"
@@ -203,7 +203,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-latest]
+        os: [windows-2019]
         run-binary: [whatsub-cli]
         run-binary-ext: [exe]
     steps: