diff --git a/programming/language/rust/pspec.xml b/programming/language/rust/pspec.xml
index 70d4f19900..8c9071aa70 100755
--- a/programming/language/rust/pspec.xml
+++ b/programming/language/rust/pspec.xml
@@ -20,7 +20,7 @@
             <AdditionalFile target="config.toml">bootstrap-config.toml</AdditionalFile>
         </AdditionalFiles>
         <BuildDependencies>
-            <Dependency versionFrom="1.66.0">rust</Dependency>
+            <Dependency versionFrom="1.64.0">rust</Dependency>
             <Dependency>perl</Dependency>
             <Dependency versionFrom="14.0.6">llvm</Dependency>
             <Dependency>cmake</Dependency>