diff --git a/dist/index.js b/dist/index.js
index 02cc8f1..455add1 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -83191,7 +83191,7 @@ var inferOptions = (inputs) => {
   const micromambaSource = inputs.micromambaUrl ? (0, import_Either.right)(inputs.micromambaUrl) : (0, import_Either.left)(inputs.micromambaVersion || "latest");
   const writeToCondarc = inputs.condarcFile === void 0;
   const initShell = !inputs.initShell ? ["bash"] : inputs.initShell.includes("none") ? [] : inputs.initShell;
-  const downloadMicromamba2 = inputs.downloadMicromamba || true;
+  const downloadMicromamba2 = inputs.downloadMicromamba !== void 0 ? inputs.downloadMicromamba : true;
   const micromambaBinPath = inputs.micromambaBinPath ? path.resolve(untildify(inputs.micromambaBinPath)) : PATHS.micromambaBin;
   return {
     ...inputs,
diff --git a/dist/post.js b/dist/post.js
index bff1f3c..dfe4201 100644
--- a/dist/post.js
+++ b/dist/post.js
@@ -78455,7 +78455,7 @@ var inferOptions = (inputs) => {
   const micromambaSource = inputs.micromambaUrl ? (0, import_Either.right)(inputs.micromambaUrl) : (0, import_Either.left)(inputs.micromambaVersion || "latest");
   const writeToCondarc = inputs.condarcFile === void 0;
   const initShell = !inputs.initShell ? ["bash"] : inputs.initShell.includes("none") ? [] : inputs.initShell;
-  const downloadMicromamba = inputs.downloadMicromamba || true;
+  const downloadMicromamba = inputs.downloadMicromamba !== void 0 ? inputs.downloadMicromamba : true;
   const micromambaBinPath = inputs.micromambaBinPath ? path.resolve(untildify(inputs.micromambaBinPath)) : PATHS.micromambaBin;
   return {
     ...inputs,
diff --git a/src/options.ts b/src/options.ts
index 0f803fc..5e63c2b 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -128,7 +128,7 @@ const inferOptions = (inputs: Inputs): Options => {
     : inputs.initShell.includes('none')
       ? []
       : (inputs.initShell as ShellType[])
-  const downloadMicromamba = inputs.downloadMicromamba || true
+  const downloadMicromamba = inputs.downloadMicromamba !== undefined ? inputs.downloadMicromamba : true
   const micromambaBinPath = inputs.micromambaBinPath
     ? path.resolve(untildify(inputs.micromambaBinPath))
     : PATHS.micromambaBin