diff --git a/package.json b/package.json
index 7a1afa9..ba7d383 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "@oclif/config": "^1.12.6",
     "@oclif/errors": "^1.2.2",
     "@salesforce/command": "^3.0.3",
-    "@salesforce/ts-types": "^1.0.1",
+    "@salesforce/ts-types": "^1.5.5",
     "adm-zip": "^0.4.13",
     "chalk": "^4.1.0",
     "fs-extra": "^9.0.1",
diff --git a/yarn.lock b/yarn.lock
index be1ea0a..e4e358e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -301,10 +301,10 @@
   resolved "https://registry.yarnpkg.com/@salesforce/schemas/-/schemas-1.0.1.tgz#d1db56759d2b22a7688e1821aec564e979237ad2"
   integrity sha512-78pP1GB/DbIS8nSWGL0GpQ27g02drrEo0vzYdRipGYAIXHMzlh1gqEsq0pOiIQlPm1MxWyEqbmf4GG5qSVsd0Q==
 
-"@salesforce/ts-types@^1.0.0", "@salesforce/ts-types@^1.0.1", "@salesforce/ts-types@^1.2.0", "@salesforce/ts-types@^1.4.2":
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/@salesforce/ts-types/-/ts-types-1.4.2.tgz#aa451c6dfcf69f614ffa5adf6567029f2d5bed5c"
-  integrity sha512-JxLK/XBv64Nq8llDCJYXn+lR4MNONatCeI+wu/7ac+NiHdsj7xCGjtZ743H0/mxRnsVqEnZzpSJDrxo2OHVbzw==
+"@salesforce/ts-types@^1.0.0", "@salesforce/ts-types@^1.2.0", "@salesforce/ts-types@^1.4.2", "@salesforce/ts-types@^1.5.5":
+  version "1.5.5"
+  resolved "https://registry.yarnpkg.com/@salesforce/ts-types/-/ts-types-1.5.5.tgz#cf6d0fe12a8ba48d79b57f63c54b5592c312e0ba"
+  integrity sha512-d4YdsA3MBTJcC6ZdqHe2+yv7MWKsoYmgjTlc56SOy8sROrQ9RjJYaUnj1h1Zi1aWGgkGaNCCAOBomcrhMa4crw==
   dependencies:
     tslib "^1.10.0"