diff --git a/requirements.in b/requirements.in
index 60aeac8..daa25e7 100644
--- a/requirements.in
+++ b/requirements.in
@@ -9,6 +9,6 @@
 # run the above commands manually.
 
 # Required packages
-pygls==1.3.1
+pygls==2.1.1
 packaging
 bandit[sarif]
diff --git a/requirements.txt b/requirements.txt
index dab0934..2feff07 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,6 +11,7 @@ attrs==25.4.0 \
     #   cattrs
     #   jschema-to-python
     #   lsprotocol
+    #   pygls
     #   sarif-om
 bandit[sarif]==1.9.4 \
     --hash=sha256:b589e5de2afe70bd4d53fa0c1da6199f4085af666fde00e8a034f152a52cd628 \
@@ -34,9 +35,9 @@ jsonpickle==4.1.1 \
     --hash=sha256:bb141da6057898aa2438ff268362b126826c812a1721e31cf08a6e142910dc91 \
     --hash=sha256:f86e18f13e2b96c1c1eede0b7b90095bbb61d99fedc14813c44dc2f361dbbae1
     # via jschema-to-python
-lsprotocol==2023.0.1 \
-    --hash=sha256:c75223c9e4af2f24272b14c6375787438279369236cd568f596d4951052a60f2 \
-    --hash=sha256:cc5c15130d2403c18b734304339e51242d3018a05c4f7d0f198ad6e0cd21861d
+lsprotocol==2025.0.0 \
+    --hash=sha256:e879da2b9301e82cfc3e60d805630487ac2f7ab17492f4f5ba5aaba94fe56c29 \
+    --hash=sha256:f9d78f25221f2a60eaa4a96d3b4ffae011b107537facee61d3da3313880995c7
     # via pygls
 markdown-it-py==4.0.0 \
     --hash=sha256:87327c59b172c5011896038353a81343b6754500a08cd7a4973bb48c6d578147 \
@@ -56,9 +57,9 @@ pbr==7.0.3 \
     # via
     #   jschema-to-python
     #   sarif-om
-pygls==1.3.1 \
-    --hash=sha256:140edceefa0da0e9b3c533547c892a42a7d2fd9217ae848c330c53d266a55018 \
-    --hash=sha256:6e00f11efc56321bdeb6eac04f6d86131f654c7d49124344a9ebb968da3dd91e
+pygls==2.1.1 \
+    --hash=sha256:1da03ba9053201bb337dcdd8d121df70feb2a91e1a0dcc74de5da79755b1a201 \
+    --hash=sha256:510a6dea2476177230c7d851125e5948efdf3fdb9ebfd8543fc434972f8faed4
     # via -r requirements.in
 pygments==2.19.2 \
     --hash=sha256:636cb2477cec7f8952536970bc533bc43743542f70392ae026374600add5b887 \