diff --git a/Handbook/GNUmakefile b/Handbook/GNUmakefile
index 06979427..2575e16a 100644
--- a/Handbook/GNUmakefile
+++ b/Handbook/GNUmakefile
@@ -328,9 +328,9 @@ clean:
 install-build-deps:
 	@echo "Installing build dependencies if they have not already been installed..."
 	@cargo install mdbook --vers "^0.4" --locked
-	@cargo install xq --locked
-	@cargo install mdbook-alerts --locked
-	@cargo install mdbook-pdf --locked
+	@cargo install xq --vers "^0.4" --locked
+	@cargo install mdbook-alerts --vers "^0.6" --locked
+	@cargo install mdbook-pdf --vers "^0.1" --locked
 ifeq ($(SG_BUILD_PLATFORM),$(SG_BUILD_PLATFORM_LINUX))
 	@echo "Installing mdbook-pdf-outline..."
 	@python -m venv $(VIRTUAL_ENV) \