diff --git a/SPEx/poetry.lock b/SPEx/poetry.lock
index 66c99bc..323631b 100644
--- a/SPEx/poetry.lock
+++ b/SPEx/poetry.lock
@@ -336,7 +336,7 @@ python-versions = "*"
 version = "1.12.1"
 
 [metadata]
-content-hash = "8935923b357c12f7361a3ef81cf5cc077db8b0e47c574dffd54af31447816036"
+content-hash = "6639aa22e7d2afaa0d67104b68e08974d26fbcd9cca38cee0d55a4219a5831c7"
 lock-version = "1.0"
 python-versions = "^3.8"
 
diff --git a/SPEx/pyproject.toml b/SPEx/pyproject.toml
index 2ab781b..2173f9f 100644
--- a/SPEx/pyproject.toml
+++ b/SPEx/pyproject.toml
@@ -7,8 +7,8 @@ authors = ["Emanuele <ema.trabattoni@gmail.com>"]
 [tool.poetry.dependencies]
 python = "^3.8"
 PyQt5 = ">=5.15.0"
-python-slugify = "*"
-parse = "*"
+parse = "^1.18.0"
+python-slugify = "^4.0.1"
 
 [tool.poetry.dev-dependencies]
 pytest = "^5.2"