diff --git a/unison-cli/src/Unison/CommandLine/FZFResolvers.hs b/unison-cli/src/Unison/CommandLine/FZFResolvers.hs
index b1cb9ac863..495025f3f2 100644
--- a/unison-cli/src/Unison/CommandLine/FZFResolvers.hs
+++ b/unison-cli/src/Unison/CommandLine/FZFResolvers.hs
@@ -4,6 +4,7 @@ module Unison.CommandLine.FZFResolvers
     termDefinitionOptions,
     typeDefinitionOptions,
     namespaceOptions,
+    projectDependencyResolver,
     projectNameOptions,
     projectBranchOptions,
     projectBranchOptionsWithinCurrentProject,
@@ -24,6 +25,7 @@ where
 
 import Control.Lens
 import Data.List.Extra qualified as List
+import Data.Map qualified as Map
 import Data.Set qualified as Set
 import Data.Text qualified as Text
 import U.Codebase.Sqlite.Project as SqliteProject
@@ -35,6 +37,7 @@ import Unison.Codebase.Branch qualified as Branch
 import Unison.Codebase.Path (Path, Path' (..))
 import Unison.Codebase.Path qualified as Path
 import Unison.Name qualified as Name
+import Unison.NameSegment qualified as NameSegment
 import Unison.Names qualified as Names
 import Unison.Parser.Ann (Ann)
 import Unison.Position qualified as Position
@@ -94,6 +97,19 @@ namespaceOptions _codebase _projCtx searchBranch0 = do
     & map (Path.toText' . intoPath')
     & pure
 
+-- | Lists all dependencies of the current project.
+--
+-- E.g. if the current project has `lib.base` and `lib.distributed`, it will list:
+-- ["base", "distributed"]
+projectDependencyOptions :: OptionFetcher
+projectDependencyOptions _codebase _projCtx searchBranch0 = do
+  searchBranch0
+    & Branch.getAt0 (Path.singleton Name.libSegment)
+    & Branch.nonEmptyChildren
+    & Map.keys
+    & fmap NameSegment.toText
+    & pure
+
 -- | Select a namespace from the given branch.
 -- Returned Path's will match the provided 'Position' type.
 fuzzySelectFromList :: [Text] -> FZFResolver
@@ -123,6 +139,9 @@ namespaceResolver = FZFResolver {getOptions = namespaceOptions}
 namespaceOrDefinitionResolver :: FZFResolver
 namespaceOrDefinitionResolver = multiResolver [definitionOptions, namespaceOptions]
 
+projectDependencyResolver :: FZFResolver
+projectDependencyResolver = FZFResolver {getOptions = projectDependencyOptions}
+
 -- | A project name, branch name, or both.
 projectAndOrBranchArg :: FZFResolver
 projectAndOrBranchArg = multiResolver [projectBranchOptions, projectNameOptions]
diff --git a/unison-cli/src/Unison/CommandLine/InputPatterns.hs b/unison-cli/src/Unison/CommandLine/InputPatterns.hs
index f3f04c28a4..2afaa9f601 100644
--- a/unison-cli/src/Unison/CommandLine/InputPatterns.hs
+++ b/unison-cli/src/Unison/CommandLine/InputPatterns.hs
@@ -3006,7 +3006,7 @@ upgrade =
     { patternName = "upgrade",
       aliases = [],
       visibility = I.Visible,
-      args = [],
+      args = [("dependency to upgrade", Required, dependencyArg), ("dependency to upgrade to", Required, dependencyArg)],
       help =
         P.wrap $
           "`upgrade old new` upgrades library dependency `lib.old` to `lib.new`, and, if successful, deletes `lib.old`.",
@@ -3267,6 +3267,17 @@ namespaceOrDefinitionArg =
         Just Resolvers.namespaceOrDefinitionResolver
     }
 
+-- | A dependency name. E.g. if your project has `lib.base`, `base` would be a dependency
+-- name.
+dependencyArg :: ArgumentType
+dependencyArg =
+  ArgumentType
+    { typeName = "project dependency",
+      suggestions = \q cb _http p -> Codebase.runTransaction cb do
+        prefixCompleteNamespace q (p Path.:> Name.libSegment),
+      fzfResolver = Just Resolvers.projectDependencyResolver
+    }
+
 -- | Names of child branches of the branch, only gives options for one 'layer' deeper at a time.
 childNamespaceNames :: Branch.Branch0 m -> [Text]
 childNamespaceNames b = NameSegment.toText <$> Map.keys (Branch.nonEmptyChildren b)
diff --git a/unison-src/transcripts/upgrade-happy-path.md b/unison-src/transcripts/upgrade-happy-path.md
index f0ea141737..ef469408c9 100644
--- a/unison-src/transcripts/upgrade-happy-path.md
+++ b/unison-src/transcripts/upgrade-happy-path.md
@@ -10,8 +10,19 @@ lib.new.foo = 18
 thingy = lib.old.foo + 10
 ```
 
+
 ```ucm
 proj/main> add
+```
+
+Test tab completion and fzf options of upgrade command.
+```ucm
+proj/main> debug.tab-complete upgrade ol
+proj/main> debug.fuzzy-options upgrade _
+proj/main> debug.fuzzy-options upgrade old _
+```
+
+```ucm
 proj/main> upgrade old new
 proj/main> ls lib
 proj/main> view thingy
diff --git a/unison-src/transcripts/upgrade-happy-path.output.md b/unison-src/transcripts/upgrade-happy-path.output.md
index 3f3cf54ac6..94de6f3049 100644
--- a/unison-src/transcripts/upgrade-happy-path.output.md
+++ b/unison-src/transcripts/upgrade-happy-path.output.md
@@ -28,6 +28,29 @@ proj/main> add
     lib.old.foo : Nat
     thingy      : Nat
 
+```
+Test tab completion and fzf options of upgrade command.
+```ucm
+proj/main> debug.tab-complete upgrade ol
+
+   old
+
+proj/main> debug.fuzzy-options upgrade _
+
+  Select a dependency to upgrade:
+    * builtin
+    * new
+    * old
+
+proj/main> debug.fuzzy-options upgrade old _
+
+  Select a dependency to upgrade to:
+    * builtin
+    * new
+    * old
+
+```
+```ucm
 proj/main> upgrade old new
 
   I upgraded old to new, and removed old.