diff --git a/cmake/fmtlib.cmake b/cmake/fmtlib.cmake
index 792bf3b02..032a68cd5 100644
--- a/cmake/fmtlib.cmake
+++ b/cmake/fmtlib.cmake
@@ -4,9 +4,9 @@ FetchContent_Declare(
 	fmtlib
 	PREFIX "${PROJECT_BINARY_DIR}/deps"
 	DOWNLOAD_DIR "${PROJECT_SOURCE_DIR}/deps/downloads"
-	DOWNLOAD_NAME fmt-8.0.1.tar.gz
-	URL https://github.com/fmtlib/fmt/archive/8.0.1.tar.gz
-	URL_HASH SHA256=b06ca3130158c625848f3fb7418f235155a4d389b2abc3a6245fb01cb0eb1e01
+	DOWNLOAD_NAME fmt-9.1.0.tar.gz
+	URL https://github.com/fmtlib/fmt/archive/9.1.0.tar.gz
+	URL_HASH SHA256=5dea48d1fcddc3ec571ce2058e13910a0d4a6bab4cc09a809d8b1dd1c88ae6f2
 )
 
 if (CMAKE_VERSION VERSION_LESS "3.14.0")
diff --git a/libsolidity/lsp/SemanticTokensBuilder.cpp b/libsolidity/lsp/SemanticTokensBuilder.cpp
index ac5295473..2f4435418 100644
--- a/libsolidity/lsp/SemanticTokensBuilder.cpp
+++ b/libsolidity/lsp/SemanticTokensBuilder.cpp
@@ -118,7 +118,7 @@ void SemanticTokensBuilder::encode(
 	auto const [line, startChar] = m_charStream->translatePositionToLineColumn(_sourceLocation.start);
 	auto const length = _sourceLocation.end - _sourceLocation.start;
 
-	lspDebug(fmt::format("encode [{}:{}..{}] {}", line, startChar, length, _tokenType));
+	lspDebug(fmt::format("encode [{}:{}..{}] {}", line, startChar, length, static_cast<int>(_tokenType)));
 
 	m_encodedTokens.append(line - m_lastLine);
 	if (line == m_lastLine)