diff --git a/crates/rust-analyzer/src/lib.rs b/crates/rust-analyzer/src/lib.rs
index 6ae527abb1ff..3dea21e56485 100644
--- a/crates/rust-analyzer/src/lib.rs
+++ b/crates/rust-analyzer/src/lib.rs
@@ -14,7 +14,7 @@ extern crate ra_ap_rustc_type_ir as rustc_type_ir;
 /// Any toolchain less than this version will likely not work with rust-analyzer built from this revision.
 pub const MINIMUM_SUPPORTED_TOOLCHAIN_VERSION: semver::Version = semver::Version {
     major: 1,
-    minor: 78,
+    minor: 90,
     patch: 0,
     pre: semver::Prerelease::EMPTY,
     build: semver::BuildMetadata::EMPTY,