diff --git a/declarations/babel.js b/declarations/babel.js
index a96a823..aff2220 100644
--- a/declarations/babel.js
+++ b/declarations/babel.js
@@ -550,6 +550,7 @@ declare module '@babel/types' {
 
     declare class BooleanLiteralTypeAnnotation extends Node {
         type: 'BooleanLiteralTypeAnnotation';
+        value: boolean;
     }
 
     declare class NullLiteralTypeAnnotation extends Node {
diff --git a/src/collector/definitions.js b/src/collector/definitions.js
index c4dd86a..dbcfc47 100644
--- a/src/collector/definitions.js
+++ b/src/collector/definitions.js
@@ -108,6 +108,8 @@ function makeType(ctx: Context, node: FlowTypeAnnotation): ?Type {
             return t.createLiteral(null);
         case 'BooleanTypeAnnotation':
             return t.createBoolean();
+        case 'BooleanLiteralTypeAnnotation':
+            return t.createLiteral(node.value);
         case 'NumberTypeAnnotation':
             return t.createNumber('f64');
         case 'StringTypeAnnotation':